Change in cycles

Hi!

I was just curious if anything similar has happened to anyone else. So I got my period when I was 12, I’ve had super regular periods for years. I got in the pill at 21 and have been on it until last august when we started TTC. After that my periods came back regular again as if nothing had happened BUT I feel like crap 3 weeks out of 4 every month. Turns out my first three days of period involve heavy cramps (heavier than I remembered as a young girl). Once I get close to ovulation I feel tired, nauseous and overall just bad. Then I have 2 or 3 days before my period that I’m ok and then pms. Is this normal? I don’t remember feeling this bad all the time 10 years ago! Is it because I’m getting old-er? 😜