Paxil Lexapro 10mg, Calm Down, Even Suicide, Crazy Dreams, Things I Noticed

I was previously put on Lexapro 10mg a day after having my first child with the intention of helping me calm down my new mother nerves. It made me feel aweful and I started having panic attacks. (I have never had them before) My doc then changed me to Paxil 10mg a day for the first week, then 20mg a day thereafter. Well, I am only 2 days into it and I already feel like a shell of myself. I have had crazy dreams and wake up several times in the night. And most frustrating I have been so irratable, biting my husbands head off at minor things. I noticed I am eating like crazy, in fact I have gained 5 pounds since Friday. I know these meds take a while to take effect and the doc said I could experience things like this and even suicide thoughts at first, but now I am terrified that I am toying with my sanity and I was better off before the medications in the first place.