Upset stomach after antibiotics. Settle?

I had long course of antibiotics after septoplasty, which were prulifloxacin (percin), cefixime trihydrate (mortega), Cefixime Dicloxacillin (Cefi XL), Levofloxacin (Glevo), & Moxifloxacin (Mahaflox). After 15 days of taking last dose of antibiotic I started feeling upset in stomach. Doctor prescribed me probiotics (VIBACT DS). I got some relief. But now its been more than 20 days my stomach is still little upset (somr hard stools, more bowel movements etc.)  I am also taking Rafron DSR capsules (rabeprazole + domperidone). For which i read that rabeprazole also causes abdominal pain, diarrhea, constipation, gas etc. I also tested stool, there is no blood, occult blood or any other abnormalities. So i was wondering what exactly causing my abdominal discomfort. Shoud I stop taking Rafron DSR capsules? Or if the condition is caused by antibiotics, then how much time it will take to settle? (Its already 23 days now since my stomach is upset)