Just took the first dose of the Z-pack (the two pills) on a full ...

Just took the first dose of the Z-pack (the two pills) on a full stomach and I feel like I'm going to die. I've been through the pain of childbirth and this can almost compare...the stomach cramping is severe and the diarrhea is immediate (you know, the "peeing your poop" kind of thing). When the cramping began, I got cold sweats...I'm still up, unable to sleep, because the stomach pains are SO bad. I know you're supposed to keep taking the pack but I am so ill I can't even imagine doing so right now. I had a similar reaction to Z-pack in 2004 but thought it was because I took a dose on an empty stomach. This confirms that it can happen anytime. I'm taking the Z-pack to get rid of a sore throat. This is terrible. I'm almost in tears. :( I wish I could just throw up but my throat hurts too bad. I'm allergic to penicillin, so this was what the doctor prescribed. :(