Talk to your doctor about alternative routes of administration -- estrogen patches or injections may be tolerable where oral adminstrations is problematic.
If no estrogen is tolerable, or is contraindicated for other reasons such as venous thrombosis, breast malignancy etc other meds to combat the symptoms can be tried, including SSRI's such as prozac, or such meds as bellaspas, catapres in pill/patch form. Some woman try herbal remedies, the most frequently used one is black cohosh, but I don't have much luck with the herbal remedies.
Although I've had other ladies tell me that gas, acid and sluggish bowels are common problems for them who are on HRT. My GYN didn't want to believe me. Within 30 days of dropping the HRT all the 'new' problems disappeared. There is no other medical reason not to use HRT. I'm 57 and other than OA and Fibromyalgia healthy. BP averages out at 118/85.