Ttc...question about nipple/ pain and overly wetness....plz read?

Ok, my husband r ttc. We did the opk this month and bd the day before, the day of, and the day after. I'm due for af this sat :( but for the past few days my nipple have been sooo tender and sore. Plus they are getting hard/erect A LOT. My nipple hardly ever get hard. I'll b reading and all of a sudden they feel as if their being pinched and they get really hard! Plus I've actually been wet since ovulation. I'm one of those who takes mucinex to help, I haven't taken it since ovulation. I've had little twinge pains in my left ovary area on and off today. I'm not trying to think to much into it since af is supposed to be here in 4 days. I've just never had this is issue with my . Any info u ladies can give me I'd greatly appreciate it. Thanks so much