Zithromax Z-Pak and abdominal pain

17/male

okay so today is Wednesday, ive been having really bad headaches for the past two weeks, i don't know why, but on Monday, my eyes started hurting whenever i looked anywhere else but straight ahead, really intense dizziness...Tuesday, the dizziness subsided, id been on dayquil/nyquil since Monday morning and stopped it Tuesday night

Wednesday - i stayed out of school all day, doctors diagnosed a sinus infection, and gave me the Zpak...

so since Monday, i hadn't crapped....i don't know if it was just what i had been eating, the illness, or what, but right when i took the Zpak's double dose, ive been dealing with stomach cramps and diarrhea. i got some kind of rash on my abdomen as well, im worried to find out what other side effects come on from this drug...

Female, 30 years old. Began taking five day course of z-pak for bronchitis., abdominal pain from the beginning, better with food. Day five, abdominal pain much worse, ending with diarrhea. Did not take last dose. Day six, diarrhea persisting, frequent watery stool, dizziness, appetite loss, feeling completely drained. Day seven, began taking anti- diarrheal, seemed better. Went to Dr., advised fluids of course. Later that day, managed to eat a good meal, pushing fluids. Some intestinal pain but feeling generally better. Then: anti- diarrheal not really working anymore. Constant watery stools, feeling severely fatigued, completely drained, dizzy, ringing in ears, chills. Called hospital and spoke to nurse, advised ER visit: probable dehydration. I have been sick for 18 days including z-pak. Would never recommend this medication. The side effects are worse than the bronchitis.

While I have taken it before, I don't recall having anything but very mild side effects (maybe a little discomfort in my belly). This time, however, it is different and I am owing it to the beauty of aging. I just took the second of the three pills (and yes, I've had the three pill one before). My bronchitis is clearing but this afternoon I had really bad abdominal pain and I have a continuous headache in the back of my head, where my spinal cord ends. It is not as bad (so far) as the one I had with Biaxin (I refuse to take that). The only bright side is that it made it a really good time to join Weight Watchers because I do not have much appetite. I was able to sleep last night, at least, because my cough decreased. The verdict is still out on whether I would do this again. Problem is, I am allergic to Penicillin.