PMS Nausea and loss of appetite

Every month about 10 days before my period I become extremely nauseous (not pregnant- have wasted sooo many pregnancy tests). It gets so bad that I could barely eat and gag at unsightly smells and when I take my vitamins. This feeling goes away after my period arrives. But by that point, I’m exhausted and malnourished. I’ll literally fluctuate 5-8 lbs and it’s so I comfortable. Anyone else experience something like this? I’m miserable.

I’m off of birth control because we eventually want to have a baby next year... but these symptoms are really making me reconsider being off the pill.