Ultrasound clean so wth?

I need some guidance or advice or maybe just some listening and understanding ears.. Please no negative judgements, I'm really mixed up as it is right now. So I've gotten off BC after 9 years and have been tracking my cycles and all that jazz. They're getting longer each cycle, which is good. Up to 25 days now. Anyway, my last period started with more cramping than usual and it was heavier than usual. Lasted 6 days - not alarming. But all throughout, I had extreme bloating, pressure, and stabbing pains super low in my abdomen, pretty much below the panty line. A lot of the pain has been on the left side (I can only imagine that it would be my ovary). I've been off my period for three days and it's not stopped. Today I saw my gyno and had a pelvic exam and ultrasound done (took like 15 seconds and one shot of each ovary and one of my uterus) and nothing. She said that it was probably gas. Over 26 years, I've had many episodes of gas and it's never been like this or lasted so long (over a week straight). I've not had any issues with BMs or constipation, either. So at this point, I feel like a moron for being worried and I feel unsure of what to take seriously anymore, in regards to my health and pain. I feel like I can't even voice that I'm hurting to my husband because "it's just gas." Idk if I'm asking for advice on what to do or for personal opinions but I'm so confused right now. Doctors can make you feel so small and insignificant.. Anyway, I apologize for writing such a novel. Any guidance is much appreciated.