Jet belly prevention. Has anyone else experienced this?

I have completed the FODMAP diet and am careful to avoid foods that may have my problem sugars in them. I also should add that I have a tortuous (mega) colon. I have found that every time I fly overseas (not sure about domestic) I get horrible gas and loose stools. I got suspicious it wasn't the food but the actual flying and after googling found that indeed the change in plane pressure causes this problem. I found some exercises to do and to drink lots of water and move around which is difficult. A UK article suggested FyboCalm Wind & Bloating Relief Capsules. My nephew gets jet belly too and he flies overseas frequently. So my sister checked with a pharmacy and they said to have your doc give you a 3 day Cipro tx right before you and use refrigerated probioticvs with enzymes. Has anyone else had this problem and did you use any of these treatments?