On birth control on final pills that are a lesser dose. Lots of cramping and white discharge no sex but we dry hump and he fingers me what's going on?

Time. From your symptoms it sounds like you are about to start your cycle. If you are not sexually active you can't be pregnant. All the best.
Pelvic pain. Pelvic pain is complex as there are several organs in the pelvis. The ovaries, fallopian tubes, uterus, cervix, bladder, appendix, intestines, colon and rectum can all be the source. Pelvic pain requires and examination to help organize the evaluation. Vaginal discharge could indicate an infection. Testing by your Obgyn is the next step.