Can anyone relate ...

I really thought I’d end up pregnant this cycle. Took the vitamins, baby aspirin, had sex the night before ovulation, confirmed ovulation, cut down on caffeine.... I’m 36 and all my testing and procedures I had done this year have been normal. I’ve had 3 chemicals and I still have no idea what is wrong with me. 2 perfectly healthy boys and now that I’m over 35 I’ve had problems. It just doesn’t make sense.