Hello. You are experiencing menstrual irregularities and being sexually active the first thing for any doctor to do is to rule out pregnancy. So please go about the same at home at least 2 weeks after the assumed date of conception using an early morning urine sample. Once pregnancy is ruled out, you would require a physical examination and the ultrasound report would be the gold standard to make a diagnosis (a transvaginal ultrasound), which will help in examining the entire reproductive system. Thus making the report really important. Please try to gain access to the report and write back to me for a more detailed explanation. We can then look into the details and guide you with the way forward. Hope this helps. Take care.