This is starting to drive me crazy. For the last 2-3 cycles i have had very bad gas for approximately 2 weeks prior to getting my period. It is not usually particularly foul smelling just a lot of movement in my belly. I found an older post mentioning prostaglandins. I thought maybe my hormones are shifting, im 38 have two kids. I have tried eliminating coffee, eating more as I tend to let myself get hungry, stop all vitamins, take probiotics or not...I just feel so gross and totally don"t feel like having any sexy time. Oh, this only happens after dinner in the evening. Any suggestions or similar experiences??