Opinions on what to do

So my period is now 9 days late. They’re usually pretty regular, never going over 7 days late. I took two home pregnancy test & they were both negative. Some people I know are saying I should go to the doctor to get the blood test done.

Should I make an appointment with the doctor or wait it out a couple more days? With my son I got a positive test when I was only a week late on my period, so I’m not exactly sure how to go about this situation