Anxiety

I recently was diagnosed with GAD and Social Anxiety and was prescribed 25 mg Zoloft to help. Its been about 2 months since I've started the medicine and it seems to be helping with my social anxiety. Recently my anxiety has gotten worse. I feel almost as if I'm losing my mind. I'm doing and saying things I don't mean and lashing out on people over very small issues. My irritability is awful the smallest things make me rage. I can't sleep or focus because my mind is constantly racing and the only way for it to stop is when I listen to music. Today I've been feeling as if I'm high but I'm completely sober. I feel this weird pressure in my head and I'm nauseous almost all the time when I eat so I haven't been eating much because I'll get sick which definitely isn't helping me. I don't know what's worsened my symptoms all of a sudden the only thing I can think of is I recently went through a rough breakup and I haven't been able to talk to my ex at all. I really don't get how that could make me like this but it's the only thing I can think of. Any suggestions on what I should do? I'm probably going to call my doctor today to see if maybe I need my Zoloft dose increased but I'm not sure if that will help.