Trying to conceive after miscarriage

I’m pretty sure I ovulated on Valentine’s Day I had what I think was ovulation cramps as they only lasted a couple of hours but didn’t track this month. I’m going to start tracking again next month. But today I woke up feeling extremely nauseous and I’m still extremely nauseous. So tried to eat about an hour ago hoping that would help but it didn’t. I took a test and it was negative I figured it would be, but even if I ovulated on Valentine’s Day like I think I did would a pregnancy test even show positive right now?