have polycystic ovaries. I have been receiving treatment at a doctor near where I live for a month. I tested with a stick and one line was dark and one was faint. The next day I tested again and there was only one line. I had an ultrasound and it showed no pregnancy but my endometrium was 14mm. So if I have an ultrasound and no pregnancy but an endometrium of 14mm, am I pregnant or not?