Need help and advice I'm loosing it

Amber
Ok compared to glow and my last af I was supposed to start on the 27th of June I still have not had af I have been using preseed before af was supposed to come and never did I have taken hpt after hpt and also a blood test (June 29th) and all bfn I took an opk and that was a bfp and still today no af and no bfp