our August attempt

We got a BFN for July So we started again with Aug. This time i O'd earlier than expected. On CD 8 i stated to get some EWCM witch is normal. My temps were really low this month, and on cd 11 i had a temp drop from 97.5 to 97.4. Also on cd 11 I had a +OPK and my cm was sticky by the end of the day. I was not sure what to do so we did not have the attempt that night. The next morning I discovered my temp had risen to 97.6. Still had sticky CM So we BD that night after BD I used some replens. I tested this before and replens brought my ph down to a 4.5-5.0. The next morning it was still a 4.5 to 5. I think we might have been to late. We had one other unprotected BD 5 days before o. I an not holding my breath for this cycle but you never know.