Just found this thread whilst searching.... turns out girls i just had false BFPs that month never using those hpt's again!! they're cr@p!

Shelly - hello, i noticed noone has responded to your question. yes it is possible your pregnancy may not show on HPTs and only on a blood test.... i've heard of women here on BB getting blood test results showing positive from 4wks etc yet the HPTs didnt show as positive until they were into their 8th week or so!!! crazy.... but it happens.