I am a 34 year old female who had a tubal ligation over 9 years ago during a C-section. I have not had a period since April, I have numerous pregnancy symptoms (including nusea, tenderness in my breasts, weight gain [unexplained, almost 20lbs in past 4 months on 1400 cal diet] loss of libido, frequent headaches, and certain cravings), but all HPT negative. Went to Dr today and he has ordered ultrasound and a gyno visit, but I m scared and nervous and what do you think it could be?