How To Treat Passing Of Watery Diarrhea After Undergoing Hiatal Hernia Surgery?

I have had yellow to bright yellow liquid diarrhea since I had hiatal hernia surgery in September. I have had my gall bladder removed, my appendix ruptured years ago and removed. I have had stent put in my right kidney then removed. Before the hiatal hernia repair(significantly large hole closed), I had GERD, heartburn, which was causing sinus issues, constant sore throat, and lung issues like bronchitis and asthma. I am 48 year old mother of three.