What Causes Migraines Along With Diarrhea And Abdominal Cramps?

Hi i am a 37 yr old female who has had been diagnosed with migraines and i have also had seizures in the past but i have been experiencing some diff things like for the past week that are scaring me like kidney failure heart attack and anurizuim are the things or the most tramatic showing up on the checker app. i have also had a hystorectomy at the age of 25 because of menstrual and the poss.of cancer in my family.so the preg is out of the ??. i have had watery diarrehia for 2 days then it was gone.i am still having horrible gut wrenching cramps and foul smelling gas and bowel movements.i was also nauseaed for 2 days then it stopped and a day later its back and worse after i eat i throw it right back up. i have also been experiencing bad vagina odor and pus looking dis. Every time this happens it has always been diagnosed as a uti or bacteria,well this happens too much and too oftn and i am a very clean perso n and i dont douse unless ordered by a doc. i need to know how to get to the bottom of this and dont have resources to help me.so please give me an opinion that will make more sense because this is an embarassing thing to deal with.also feel free to call me if you want YYYY i am desperate and think that its more serious than i am being told.