I've been off birth control for only 4 months. My 3 cycles off BC have been 29-32 days, so still adjusting. We had sex every other day during fertile window- used an ovulation test and everything to confirm. I'm now on day 38 and my period is a NO SHOW. I've taken 5 home pregnancy tests over 8 days- all negative! What the heck? I've never been this late before, should I go to doc and take a blood test? Am I being impatient? Has anyone out there been more than a week late but not pregnant? Or tested negative but actually pregnant?