What should I think

So the day before my ovulating started (the day before), i had sex which a condom was not used as well as the pull out method was not used. During my ovulation period, I had the smell of period blood but was not bleeding but had a lot of white discharge. Today is my last day of ovulation and I woke up sick asf. I have a headache, stomach ache allll day, and super sleepy. Now, my mom used to get pregnant real quick. Like the first day of her ovulation. So I’m wondering if it’s just because of my ovulation which never happened before and I was not sick before today. Or should I be thinking of pregnancy?