Pain during sex

So this is my typical ovulation time. I should have ovulated the last two days or today. I haven’t tracked in just going off the typical time frame. I have been in my fertile window for about a week though I am currently trying to conceive so im having unprotected sex and I have everyday for the last week. The past two days I have had sex though it has been painful. It kind of is like the cramping you get when your constipated but only during sex. It’s in my pelvic area lower stomach. Any idea what this could be??