I think I want to retest for pregnancy?

I am 7 weeks along, I read about what symptoms other women have like morning sickness mood swings etc. I have nothing, I think I should retest. I have been to the doctor already and they have confirmed a pregnancy. Am I over reacting?? I feel nothing. I almost had a drink last night because I don't feel pregnant. My husband had to remind me I am preggs! How sad is that.