Confused

My husband and I have been TTC for 11 months. We know it's a difficult road for us since he has a low count and low motility. This month I tracked closely and since I know when I ovulate because I feel it every month I was sure this month was the month. My boobs felt heavy and started cramping with lower back pain at the end of my ovulation week. Have had these symptoms for about a week now and at 8dpo with 6 days til AF is due I am getting the feeling a BFP is no where in sight. I'm not feeling any symptoms now and with my emotions all over the place I am wondering if anyone else has had this happen and still got a BFP.