I haven't got my period since September 19. I have recently gone to get an ultrasound done (12/16) for other reasons, so I don't know if they didn't see anything because they were not looking for that or because there is nothing there. This whole week I have been having a hard time staying awake at work and my nipples are in a lot of pain. I also look very pregnant but maybe it's just me being fat. Every test I take is negative ! What do I do now? Could I be pregnant? We've been trying for a baby after we lost our first in April.