About 3 months ago I started to feel shakes, like i was going to faint, head pressure, light headed, sick when going out places. It then started when i was at home, just watching tv and sitting down, so I went to the doctors and they said that it sounded like i was deficient in something. I had a set of blood tests done and it came back that I am very low on iron and vitamin D. For the last 2 months I have been taking supplement tablets for this. However since I have been to the doctors I have been feeling worse and anxiety has been really bad. But I have started feeling really weird, like i don't belong and the world isn't real. I don't know what to do or who to trust.. I don't want to feel this way forever. It just doesn't feel right and feels like somethings missing. Is this derealization or depersonalization? Is it because of my iron deficiency? I am only 21 and have never felt like this before. I feel a bit better just before i go to sleep, but then when i wake up i feel so bad and sad and just feels so heavy on me, i don't know which way to turn.