Lately my stomach has been really bloated, and I have really sharp hunger pain type things but I'm not hungry/: , I've gained weight in my upper arms and my whole stomach area, my belly button looks different and I feel weird sensations around my pelvic area. Sometimes I'll get nausious randomly in the middle of the day or at night, or get random headaches. I feel more tired than usual, and my menstrual cycle has been really light as well, only three days and usually it's incredibly heavy and crampy..these sound like pregnancy symptoms, I had sex 12 weeks ago but I took a pregnancy test and it said negitive! I went to the doctor and got an ultrasound, two days later they called and said that there was nothing wrong...but I think it's getting worse, and I'm worried..I don't know it could be.