Late period, tiredness and sore ?

Ok its been more then 35 days since my last period.....actually much more then that. I checked with the doctor 3 weeks ago when i was sick with the flu and i was diagnosed with acute bronchitis. I have headaches, sore and lower back pain but i do have problems with my back. Am i pregnant and have this happened to anyone? My husband been out of the country before my last period. so what is goin on?Could it be from my sickness or stress that my menstrual cycle is delayed or could i be pregnant?