blood test?

K
Need some advice. I got my BFP on Friday and today was my expected period and nothing. I took a test and it is still positive (they have been getting darker) so I called to see if I should get a blood test to confirm. The doctors office said they don't do a blood test to confirm they just make my first appointments. Is this normal? Should I try to get a blood test? I've taken several tests and they're all still positive. Thanks for your help!! 😊