I'm supposed to be in my window, and ovulate tomorrow. Last night when hubby and I started BD, I noticed my nipples were tender. I logged sex and breast tenderness because nipple tenderness isn't an option. it is literally just my nipples and they feel like someone is cutting them with shards of glass. I typically experience breast and nipple pain/tenderness before my period but that usually starts CD 21. this started CD 14. I don't use opks so I suppose I could have ovulated earlier but it is still way too early for early pregnancy symptoms and when my breasts typically start hurting. Any thoughts????