Anyone that put their last month's period on here and then went to doc and they changed it ?

So by my last period . I am 7 weeks exactly today.. going to the doctor in 1 week.. so I will be 8 weeks.. will it really be 8 weeks or more like 6 weeks cuz those 2 extra weeks added on.. so when u went to the doctor and we're tracking it on here before that.. did your weeks change?