13 days late! Help!

I’m a little concerned. I am 13

Days late and my cycle before this was regular for over 1.5years.

I keep getting negative tests.

I even went on Tuesday for a blood test and that was negative also. I see my doctor Wednesday, should I be asking for certain tests or anything? I honestly don’t think I’m pregnant according to glow I should have ovulated June 11 and it’s been over 3 weeks since I’ve had sex so I assume the blood test would have picked it up