AF started 12 days ago. I did an OPK today which gave a strong (and unexpected positive - a bit too early). I had some ebay cheapo hpt so I decided to test (maybe I'm going mad, but last af was lighter than usual) and instantly bfp! Do I believe these cheapo tests? So I've bought a clearblue, but currently can't squeeze out a drop of wee. I thought having af whilst pregnant was a myth.