Nervous and worried

I am 5 weeks 4 days and have taken 2 pregnancy test. Both were extremely positive. My first appt isn't until the 1st. I have had almost no symptoms. I feel very tired and my boobs are a little sore but other than that I feel good. My oldest is 2 and I have taken her swimming and to the water park etc. When I was pregnant with her I had extreme morning sickness (I lost 20+ pounds and was put on an iv). It is kind of making me worried that I don't have any symptoms.... What do you think?