We have been DTD every night since AF. Used a tube of Rephresh last night. Had a possible faint fade in opk? Not as dark as usual. We DTD using sylk positive opk this morning. Checked my ph at noon out of curiousity and it was as alkaline as it could be. I immediately paniced and used a tube of Rephresh. Probably killed anything that was left I am guessing. Not sure what to think now?