Bloating can be due to many causes but at your age, consult a gynecologist too to rule out PCOD (polycystic ovary—though it will also cause menstrual irregularities, sometimes it presents just with a bloated feeling), ovarian cancer, and pelvic inflammatory disease. It can also be due to colitis or due to parasitic infections and hence a stool test is a must.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.