Hi all. I have an odd situation.. I have been "feeling" pregnant for a while. The last time I had sex was in November with a very abusive ex-partner. I have been having very light short periods (what I think/thought was monthly breakthrough bleeding) & symptoms of pregnancy (sore breasts, tired, little appetite) etc. If I am pregnant I would be almost 16 weeks...4 months.. Only 1 positive urine test (have tried many). Went to ER for ultrasound as I have been having severe lower stomach pains... No baby on screen or any sign of baby. Ultrasound -at 15 weeks & 6 days- would be 100% accurate, right?? This means I'm not pregnant? Or could they have missed something/made a mistake?