Yesterday I went to urgent care for sudden, severe pelvic pains from the night before . By the time I went in it was a dull, achy pain. I threw up once, and had irregular bleeding between periods. They took a urine sample but told me it was fine and sent me home. Two days since the severe pain, but I m still experiencing dully pains, nausea, and lightheadedness. I took a pregnancy test but it was negative, any ideas?