My doctor thinks its a LP defect so I was prescribed Prometrium to be taken after Ovulation until I get a BFP or AF. I got my +ve OPK on March 15th and started prometrium on March 17th. I have been spotting since the day after Ovulation. I do not know why. I was also tested for Day 21 progesterone and It was 55, well above the normal levels. So its not causing the spotting. So whats going on? that I donot know.
I still have 6 days until my AF arrives. So I have to wait these days with patience. My hope hasn't withered yet. I still hope I would get a BFP this month.
Please keep me in your prayers.

