My IBS is really bad a few days before my period, it usually gives my D, an awful, lower backache, headache and general crankiness. I dread that time of the month with a passion. I just went through it last week and it was a BAD WEEK. I am hoping for a better time this week. I take the Immodium for the D, use ThermaCare pads for my back (gives huge relief) and get as much rest as possible.You are not a baby, I think alot of us women go through this every month. I hope the Lexapro helps you out. Good luck!