So I am 2 weeks late on having my period now and I've taken like 5 tests periodically throughout the last week and they've all came back negative. I called my doctor and scheduled an appointment but it's not for another four weeks! Is it likely that I'm pregnant?? I don't really know if I'm "regular" or not because up until the last six months or so I've was always on some for of birth control that regulated it for me. Help!