Feeling paranoid!!

Belle

I just got to know I am 5 weeks pregnant!! It's only been 4 days since and I've only been feeling tired, fat, teary and angry!! I do not feel like doing anything. No other symptoms and I have the urge to keep taking a pregnancy test! I went to the gynea and I saw my tiny round baby but I am so afraid !!!! What if it is not there by my 8th week??? Feeling stressed with all the Dos and donts :(