I’m currently 16DPO, period 2 days late and BFN. I’m fairly certain of when I ovulated as I use OPKs and BBT. I had some spotting on 11 and 12 DPO which I sometimes have before my period so didn’t think much of it but then my period never actually came. Do you think possible chemical pregnancy or have a just missed a period this month? Anyone else had this happen?