so confused

Liana • Mumma of 3 beautiful babies

I went for my first blood and urine tests on the 26th. the doctor gave me a referral for an US in two weeks time (estimated 8weeks along by then) and told me not to come back for the blood results until then!? has this happened to anyone else? I am "low risk" but I thought the whole point of the blood tests was to see how high the hgc levels are and to see if they double or go down? FTM here and I just want to know more, please help haha