My husband and I have been ttc for about a year and a half now... I do opk and typically get no lines until my ovulation day, this time I was getting faint pink lines for 4 days in a row after ovulation. I had nausea in the evening two days in a row, breast tenderness and swelling. My period is due today and I have a light brown discharge, we actually noticed this same discharge after sex two days ago, is it IB? HPT is negative. I also had intense cramps yesterday that made me believe my period would arrive today. I know time will tell, but not knowing what's going on its nerve wracking! Any insight would be appreciated.