Pms symptoms. Help

Hello. I’m 42 and this just started two cycles ago.

Seven days from period I have the worst indigestion, upset stomach, back pain and bloating. It last till 10 days after period is over therefore 20-22 days in total. With a 28 days cycle it sucks.

I couldn’t eat anything solid cuz I will either threw them back up or the worst bloating I’ve ever encountered. Tried gas x, Pepto bismal and nothing helps. Went to doc but she doesn’t seem to know or seems to care. I’ve missed two months of workouts feeling like absolute crap. Im starving but too afraid to eat.

Never had pms symptoms before. Any advice is much appreciated. Thank you.