Talk to Gynecologist on Irregular Menses With Pain In Pelvic Area

I have irregular menses last time I had menses after 80 days and few years back I didn't have it for 7 months. but now I'm feeling throbbing and pulsating pain in my vaginal area a pressure is built but bleeding doesn't start. also I gained 5 to 6 kgs weight in last 6 months although my routine was same and diet was same too. and its hard for me to loose weight even after 15 days of workout and diet I don't see any difference in weight. I got my thyroid tests done they were normal. ive got my ultrasound done it doesn't show any pcos. I'm very stressed about my weight gain. kindly help