Sore boobs at 7dpo?

I think I’m 7dpo, could be 6-8ish, as I skipped the opks this month, but I’m pretty regular based on the opks I’ve used the past year or so. We decided to take it easy this month and just breathe! Tonight my breasts became very sore, and feel hot, if that makes sense, inside. Just burning a bit throughout.

I try hard not to be a symptom spotter, but this is very noticeable and not usual for me. Has anyone else experienced something like this so early on, and what was your outcome?