HELP please!

I have a question. Me and my fiancé are ttc and I am 2 days late on my period. I have been taking prenatal vitamins because I heard it helps with ttc. My nipples are sore but my breasts are not and they have been erect all day for no reason. I've had CM, been bloated, had light cramping, had frequent urination, tired, my boobs feel fuller to me, and was nauseated for a couple of days just in the afternoon. I tested before and they were neg. please help. I put in my period was two days late and it added 2 days. AF should've came on 5-30-17.