and now i have noticed horrible bloating, gas, stomach pain and constipation every cycle about two weeks before my period (mid cycle). I have NEVER had this type of problem in the past. I have always been very regular. Could this new side effect be caused by the switch. Arn't they identical in make up or is there a difference between Ortho-Tri-Lo and Tri-Lo-Sprintec? I am just miserable and I don't know what to do. Stop the generic and pay high prices of the regular?