My girlfriend hasn't has her period ifs has been 3 days late and I'm really really scared this has already happened once where she normally had her period get here the 13th and then from one month the other it changed to the 24th . That process had me going crazy with anxiety attacks .she hasn't shown any sings of pregnancy at all she has said her stomach hurts but she has been getting those for as long as I can remember. She has always been really complaining about head caches since we started dating I don't know if this information helps oh she also had stomach flue two weeks ago and I heard that disease can delay a period. She has never really had an ex act day for her period it's comes all around the 24 never exactly on the 24 and when she had it the 13 it was always on the exact 13th. I really don't know what else to put down to help you but I'm so scared and need help and awnsers. She also hasn't been sleeping early while we have been in break she has been sleeping around 2 to 3 every day.