Genuine help needed. In case like me?

I am unmarried and never had sex as such. I am having issue of blood streaked vaginal discharge, that is intermenstrual bleeding. I have started taking tablets prescribed by gynaecologist for that from today. But I also feel kind irritation,pain and discomfort inside my vagina. I also have history of right sided pelvic pain radiating to lower back and leg, which has remained undiagnosed yet. My scans such as USG and mri didn't show anything abnormal. Currently the pain is reduced than before. But I am worried about the discharge. I feel that something is wrong inside my vagina/cervix as I feel pain and irritation inside. I haven't been checked internally yet by any doctor. But I wished to be checked to rule out the cause of symptoms I am facing. Is it possible in case like me? I really need a doctor who can help me out as since 3 months I am facing this issue. Multiple antibiotics as well as 2 cycles of oc pills have been taken. Even from today with primolut n and antibiotic. Plz help