Digestive issues after baby

I had a baby 7 months ago. I healed well and was fine with everything after 3 months. Except my stomach. I go off and on with having stomach issues. Cramping, diarrhea, constipation, gas, etc. It goes off and on and I have weeks of good and then weeks of pain and uncomfortable. I have never had this until having my baby. I have checked a few family history things like diabetes and food allergies but nothing has explained it. Did anyone else experience this?