Period vs Ovulation 🧐

Y’all, I’m so confused. What’s my period and what’s mittleschmertz/ovulation? I mean, I know what they ARE, but I’m having trouble telling mine apart.

I’ve had an IUD for about two years now but wanted to start getting in the habit of tracking my period and stuff like that for when my husband and I decide we’re TTC (or at least not-not-trying). But ever since I’ve been paying attention to my body I’ve been more confused! I can’t tell what’s my period and what’s ovulation. I get cramps, backaches, tired/cranky, and some sort of discharge with both. The only difference I’ve really noticed is that in one instance the discharge is more reddish-brown and intermittent over a couple days to a week, and in the other instance the discharge is brighter red and over within a couple days. Which one is which?!

(Also, yes, we’re boring, I know. I’ve had no sex drive for the past like... year...)