Am I spotting or am I on my period?

So I took my ovulation test yesterday and I had my peak..(I have clear blue digital advanced) I had sex twice in the past 36 hours. But yesterday I had really bad cramps and I started to spot.. them today the blood was a little more noticeable. Then it stopped. I read someone say that before your period you can have a positive ovulation test because of the hormones in your body. Is this true and what do I do? Also my periods are really irregular from a medication I’m on. I’m pretty sure it’s been about two weeks since my last period. Lmk please !!!!!!