Idk just a question kinda?

I’ve been cramping terribly. It’s my ovulation week so of course we’re doing the do ;). Since day 3 my cramps are so bad I don’t even want to eat anything. I keep going to the bathroom to see if it’s constipation or gas but nothing so I just crawl into the fetal position until it’s over. What do I do? Can I take a pregnancy test this early?

Ps.... were using preseed also idk if that matters.