I feel like I'm losing my mind

So I'm due to start my period today, it's always like clock work. I have a killer headache, I'm tired and my tummy is upset. I can't tell how much of this is from stress anymore. My SO and I have been ttc for over a year, I have spent a small fortune on tests of all kinds. At this point I would love to just wait and see what happens, but I'm to neurotic and I would spend the next how many days/weeks stressing. Anyone have similar issues? How did you deal with it