Hi, I'm a new member of this site. (Long post ahead.)
At the start of this new year, I was diagnosed with anxiety and depression. I suspected I had depression for a while but never went to see anybody for it. Before this year, I usually ignored my problems and emotions. I spent a lot of time at home on the computer or playing video games because I had quit my job at the end of 2016. I don't have any health issues other than low Vitamin D (which I was taking meds for). I had my first ever panic attack back in Dec 2017 when I admittedly took 2 gummy edibles. But other than that time, I was drug and alcohol-free for most of my life. I started to feel really anxious around Jan 4th, 2018. My brain suddenly started to think about my health and my breathing. My body was really heavy and there felt like a fog in my head. I completely lost my appetite and felt nauseous every time I thought about food. I went to Urgent Care on the 7th where they told me it was anxiety making me feel all the symptoms I was experiencing. I was prescribed Lexapro at a 10mg dose and was referred to see a counselor, who I made an appointment with but couldn't see until the 16th. The next day, the 8th, I started the medication and had a panic attack that very night. But this one was different from the one I had in December. I couldn't breathe, I was hyperventilating, my limbs went completely numb and cold, and all the blood rushed to my chest as if to keep my heart alive. My family called 911 for medical. When the EMTs arrived, they ruled it out as a panic attack and was able to calm me down before they left. But still not feeling any peace of mind, I went to the ER. They took an x-ray of my lungs, an EKG, and a urine sample. Everything came back normal and I was sent home. Two days later, I had another panic attack seemingly out of nowhere because I was just watching TV when it started. I went back to Urgent Care where they advised me to see my PCP and to keep taking the Lexapro I was prescribed.
In the days that followed, every day felt like I was dying. I felt a shortness of breath all the time and couldn't sleep for more than 4 hours a night. I had an emotional breakdown two days in a row because I felt hopeless and like I was going to die that day. I only ate a few bites on the days I could stomach food and lost over 10lbs. On Saturday night, the 15th, my chest felt really tight and heavy, like there was someone sitting on my chest. I became scared that I was having a heart attack. I didn't want to inform my family because I felt like a burden on them. In the morning, I felt fine but the chest heaviness was still there. I went to the park with my friend to walk around the park and I noticed that the heaviness went away. I started to walk in the mornings and that seemed to help a little but it the tightness would come back when I didn't move around. I also began to notice that whenever fell asleep, I'd wake up numb or with a very dull sense of touch, and would go away after some time passed. I saw the counselor on the 16th, she was able to help me come up with some methods to deal with my anxiety a little better. Such as establishing a routine and doing light exercises. I also went back to Urgent Care on the same day because I wanted to check out the tightness I felt in my chest. They told me I had an acute upper respiratory infection and was prescribed medication to take for about two weeks. The methods the counselor came up with seemed to help me for a bit. I regained my appetite and even started to sleep for more than a few hours. Although, I was referred to see a psychiatrist by my counselor and he prescribed me a sleeping aide because I was not getting a deep enough sleep. I didn't take the sleeping aide because I wanted to make sure it was clear with my doctor first. Because along with the Lexapro, I was taking Benzonatate 3 times a day (as needed) for my respiratory infection and Vitamin D2.
On Jan 23rd, I was finally able to see my primary care doctor. I felt as if she didn't fully understand the extent of the chest heaviness and breath shortness I was feeling. She didn't listen to my lungs or heart. Instead, she prescribed me a higher dose of the Lexapro (I'm now taking a 20mg dose) and ordered some blood work for the numbness I felt when sleeping (she told me it could be diabetes or a thyroid issue). She also referred me back to the same psychiatrist office I had already been to before when I was prescribed the sleeping aide. That night, I felt the symptoms of a panic attack but was able to calm myself before it started. The next day, I had to go back to the psychiatrist office. I admitted I hadn't taken the sleeping aide yet because I still wasn't sure if it was safe to take with all the medication I was already on. They reassured me it was. I also went to the lab to get my blood drawn on the same day.
Now to the present, I've noticed in the last few days that the nail beds of my thumb, index finger, and pinky finger turn white when I stretch out my fingers. I've read that it's a sign of anemia but I can't fully be sure because the lab tests aren't completed yet and I won't be able to see my doctor for a week. My anxiety feels like it's gotten worse since I've been taking the 20mg of Lexapro. It feels like I can't get a deep enough breath or that I have to inhale manually because my body doesn't do it after I exhale.
Last night, I would doze off a few times only to wake up suddenly because it felt like I had stopped breathing. I fell asleep for an hour or two and woke up to a panic attack that felt different from the last three that I had. My breathing was slow but my pulse was racing. My arms and legs were tingling and went cold. I was for sure I was going to pass out. When I finally calmed down, I tried to sleep again only to be jolted awake by the feeling of not breathing. I woke up feeling tired because I only slept for a few hours again but I couldn't go back to sleep. My throat was sore and I had little energy.
Today, I tried to go walking as I usually do but only a few minutes in, I started having symptoms of the panic attack I had that night. I was at the park and immediately went to my car because I didn't want people to see me freak out. Thankfully, it didn't develop into a full-blown attack and I was able to drive myself home. But now I just feel like I'm not getting enough air. I feel lightheaded, fatigued, nauseous, and short of breath like I'm going pass out at any time. I'll get a dull ache in my right arm and will go numb if I bend it for too long.
I have an appointment with my counselor this coming Monday, the 29th, and an appointment with my PCP the following Tuesday, Feb 6th. I'm just really nervous and scared that if I do have anemia, or something wrong with my heart or chest, that'll it'll be fatal by the time I see my doctor again or get my lab results. I do think I have hypochondria (which is health anxiety) because a big part of my panic stems from me worrying about my health. I'll google symptoms that I have and always see results like heart failure, heart attack, respiratory failure, etc. but I can't stop myself from doing it.
I don't know if the meds are helping, or if the new dosage is messing with my body. I don't want to go back to the ER and waste their time if it is just my anxiety. And they're probably sick of me at Urgent Care.
Sorry, long post. I just don't know what to do. Walking and being busy used to help me with my anxiety but now it's only making it worse.
Getting worse and worse
Anxiety or Asthma attack? Probably going to loose my job. Feel like a goner. 
My anxiety is much worse
Anxiety get worse on nigth time 
Anxiety and intrusive thoughts getting worse.
