one point of note --- some antibiotics are really hard on the stomach (especially culprits like BiaxinXL or even [sorry Norm] CiproXR). usually these symptoms abate within 10 days after discontinuing antibiotic therapy though. if not, you might want to consult your physician to discuss the possibility of some residual stomach pain. additionally, these symptoms can be compounded by taking OTC meds such as Naprosyn, Advil, etc.
hpoe you feel better!