I am on my 2nd day of the Z Pak. I started it last night after g...

I am on my 2nd day of the Z Pak. I started it last night after getting the ok from the pharmacist to do so. I ate a small meal with the 1st two pills. I was up with stomach cramps and diarrhea all night long. I had to get up at least 4 times during the night. I was nervous to take my 3rd pill today but I ate some light breakfast and took it and I am at work now literally bent in half. I think for some people with more sensitive stomachs, this med should be taken with caution. I'm going to finish it since I've started it, but will avoid taking this again.