4-5 DPO AND BREASTS STOPPED BEING SORE

Hey there! This is my second month of TTC and first month using OPK and temp charting. I can tell that I ovulated on CD14 because of  dip in temps and then the immediate rise afterwards. Two days later my breasts became sore, mostly on the sides by my armpits, not the nipples though. they stayed that way until today and now no longer are tender. I guess my question is that is it possible for the breast tenderness to come and go due to the progesterone rise directly after ovulation and still be pregnant? I remember with my last pregnancy I had extremely sore breasts however we werent TTC and I noticed it after I missed my AF. And of course I am noticing every little thing my body does or does not do right now. Has anyone gotten a BFP after feeling the normal rise and fall of progesterone right after ovulation but before implantation could occur? Ugh. I also had a very "full" feeling in my uterus all week while I had the EWCM and positive OPK's. That feeling seems to have subsided also. Oh also DH and I BD'd the day before the first positive OPK, the day of the second positive OPK(which was my temp drop day so Im pretty sure I ovulated that day) and the day afterwards. Any feedback is greatly appreciated and thanks beforehand.