Round ligament pain before BFP?!

Monday night I had severe round ligament pain (or what I believe was - TTC #1 - but from what I've read, the pain was EXACTLY where that is and how it feels).

I woke up hardly able to move because my back was so sore yesterday morning.

Then last night during and after BD I was SOOOO sore from the waist down that any little movement even on the bed or near me sent shockwaves that had me in tears. My hips, my back, my legs, everything....but mostly my hips.

AF is due in 3 days. Has this happened to any of y'all before?

This is brand new to me. Like, I could understand being that sore if we were just BDing every day all day for a bit, but it had been 4 days. 🤷 This is our 6th cycle TTC. I have recurring cysts on my left ovary, but that pain is always MUCH higher. The round ligament pain I felt was down in my groin.

Anyone?