First post, please be nice.... ovulation help?

So I just started using the app about a month ago. I've been off bc for about 9 months and my cycles have been fairly normal so I didn't bother tracking, but recently my husband and I have thought about it maybe being time to ttc so I thought we should start tracking. So about 3 days before my last period was due we got a little excited about the thought of baby making and did the bd.

That same day af came, which I thought may happen since it sometimes does if we do it that close to my date. Anyways, af was pretty typical for me, 4 days medium to light flow. We did the bd a few times and then took a break for a few days and then did it again, but basically it's been ever 2 or 3 days. I supposedly ovulated today but since I haven't been using the app long and because af was early, I have no idea how accurate it is. I've been insanely tired. Yesterday, I fell asleep on the couch with my in laws over. I can feel my temperature fluctuating all over the place. I've been kind of nauseous feeling in the evenings. And I had some light cramping for 3 or 4 days early last week and sore lower back for the entire week.

Basically, I'm wondering if it's possible that I ovulated closer to my last af or are these just all symptoms of ovulation? Should I just test early and get it over with or am I crazy?