I Am 42 Year Old Perimenopausal Woman. In January I

I am 42 year old perimenopausal woman. In January I began having a mild pain by my naval on right side with nausea and gas. It lasted 2-3 days. In February I got again. Same symptoms. Then again in March. There is also a burning sensation in lower abdomen with this. I am experiencing it again as we speak. Any ideas as to what it could be? I read that in perimenppause it could be a gastric disorder...