i am currently awaiting an ultrasound to see if im pregnant ...i have flutters everyday (not gas) and the doctor recently told me that my uterus feels as if im 18 weeks immediately upon examination??? if im preg. i should be no more than 2-3 months , i have fibroids that range from 1-5cm, i look like im 3 months preg....my blood test was negative ,i had one positiv preg test and three negatives... what could be happening ???