Hello dear! I have gone through your medical history and I have understood your concerns! As many others antibiotics, Clindamycin may give non wanted side effects such as: bloating, cramps, heartburn, hives, itching, dry mouth etc. Having so much side effects together, makes this drug uncomfortable, so in my opinion something else must be tried. I would recommend you clarithromycin twice daily taken after meals and with a lot of water to diminish side effects as much as possible. For the heart burn or reflux consider Ranitidin twice daily before meals and simethicone containing drugs to prevent bloating for as long as you are on medications. Try to maintain a balanced diet, with fiber foods, vegetables, and a lot of liquids. I hope you will be fine soon. If you are satisfied with this answer please kindly rate it as helpful. Sincerely, DR ERIOL.