i am about 6.5 wk. The gynae was telling me that in the first few wk, everything follows a strict routine, e.g. By hw many wk can see sac, hw many wk can see heart beat, hw many wk should be hw big. I am so worried.How many weeks are you now? Maybe too early to see sag and hearbeat. dont't worry, everything will turn out fine. Mummy must remain in a positive mood