Hello,I was recently told I had chlamydia, and was prescribed a one time dose of 2 500mg azithromycin (Zithromax) and a 7 day dose of 100 mg doxycycline 2 times daily. Well, I am also on iron meds, etc. And waited till I went to bed to take both doses for my chlamydia. I waited 10 minutes before laying down, ate 2-3 hours before the dose, and took my dose with a full glass of water, like told to do. I ended up waking up multiple times to a painful gummbling and gurgling stomach and would vomit 5-6 times before returning to bed, and repeating this several times throughout the night, it only ended once I had a few cases of diarrhea, and the puking, but not the nausea came to an end. Is this normal? And how long will it take to see results of treatment?