Hi, Excessive prostaglandin can cause flatulence, diarrhea and the bloating sensation that is usually felt before a period. Since you had an abortion naturally, you did have excess prostaglandin production at that state. Added to that, the use of medication also creates gaseous distension. You can try natural remedies like posture, intake of bland diet and avoiding heavy foods, avoiding constipation by increasing liquids and fiber in your diet and using antacids and carminatives for some time. Hope this helps. Take care.