Spoting due AF

soyagui_82@hotmail.com

Dear ladies... Pretty confused here! I'm currently CD32, 19DPO. And I have been spoting (minimum spot) 15DPO,16DPO & 17DPO exactly when AF should be. Then nothing on 18DPO & 19DPO... But BFN.

What do you think this could be? PLEASE ADVISE! 🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼😕