Hormone/sore boob question

[Blackout81]

So since my boobs are sore right on time in my cycle (CD20) I'm guessing this is PMS despite no peak day. here's my question - my understanding is sore boobs are caused by progesterone and progesterone is made after you O, so would it be safe to assume I DID O, or can you get sore boobs even if you don't? I know I can't know for sure.

I am am temping next cycle, I get it, I learned my lesson!

[daisy]

I think you're right about progesterone causing sore boobs post O. Mine are always sore a few DPO and stay that way until AF shows.