Do you know why you have this? Some things you may want to try are an elimination diet to see if certain foods are bothering you, a gluten free diet (ask your doctor to test you for this before you change your diet), digestive enzymes (health store), ask for a SIBO (small intestinal bacterial overgrowth) test or try eliminating carbohydrates for a short period to see if you feel better) and be checked to ensure you don't have ovarian cysts. Good luck.
I had a lot of bloating and gas and abdominal pain after taking six weeks of antibiotics for cold problems, went to a natural health store and they gave me a Dietary supplement called Digest-All by MRM and GI-DTX and Ultra Flora Plus DF Capsules by Metagenics. These supplements help me more than what the Dr. gave me.
You may need to take probiotics (comes in a pill form) this helps with the microflora balance in your intestinal system. Its a natural dietary supplement. This might be what your already taking though.