3 weeks late

Alissa

My period is about 3 weeks late, and I was having unprotected sex all throughout September. I’m not on any form of birth control. But I’ve taken 2 pregnancy tests and they both came up negative immediately. Should I go see a doctor or just wait it out another week or so? Should I keep trying pregnancy tests? I took both of them at night, so should I try taking a test in the morning when my hCG level is highest or will I get the same outcome? Lol help!!!