I went to the dr for my 1st u/s with the assumption that I was 6 1/2 weeks along. When I got there the sonogram tech (what ever they are called) told me that it seems I'm only 4 1/2 weeks along. But I am measuring at .23" which should be about 5 1/2 weeks. I'm confused and worried because I had a miscarriage this time about 3 yrs ago and it's very hard. I went in thinking we would get a heart beat and all we got was a yolk sac? I'm trying to keep a positive attitude but it's hard. I'm not sick at all I do get nauseous every once in a while. I pee every 5 min it seems and my boobs hurt like crazy, not to mention they are bigger and my nipples are always hard and the shape has changed.