Period Soo early!

So we're trying for number two and I have been so sick the last two days. Can't eat. Dry heaving. Heavy CM. And I ovulated some time 7-10 days ago. I normally have 31 day cycles. My period isn't due for over a week and randomly! wiped this morning and there was blood. I'm not cramping at all but I know this is got to be my period bc it's so red. I could've swore I was pregnant bc I felt so sick. So confused now. Why do our bodies go haywire when we want to conceive LOL