I have been experiencing persistent stomach discomfort for more than a month. An ultrasound revealed a 2.1 mm kidney stone, and I was also diagnosed with early-stage PCOS. I completed a course of antibiotics, but my symptoms have not improved completely. I continue to have significant gas and bloating in my upper abdomen, pain when pressing around the navel, and a general feeling of discomfort throughout my abdomen. I also have intermittent loose stools. Additionally, the lining inside my mouth has been peeling. I would like to know the possible cause of these symptoms and whether any further tests or treatment are needed.