2dpo.... soooo sore!!!!?

It's just from an increase in progesterone after ovulation. You may have more progesterone in your system this month than in previous months so they are more sore. Each time I had my day 21 progesterone drawn the levels were different (41, 21, 24, 31). Each time my s starting hurting at different points during the tww. It would be too early for any pregnancy symptoms since implantation hasn't even occurred yet. It could be coincidence or it could be a good sign. High levels of progesterone help with implantation so maybe that's what happened when you got pregnant with your daughter. Good luck!