Ok so I have an ongoing problem in my household that just won't die.... according to my Dr I'm 19 weeks pregnant but according to my ultra sound I'm 20 weeks pregnant since my husband keeps up with when have sex he feels as if I had sex with someone and conceived a week prior and it's killing me... I'm also an exact person and by this being a week off is driving me insane and at times I can't function... is this normal to be a week off?

Love a first time confused mom