Late period

My period will be about 5 weeks late on Tuesday. At about two weeks late I got what I thought was a faint positive but have gotten negatives since. I don’t track ovulation at the moment so I’m not sure when or if I ovulated but for the whole time we have been trying the app has been right on when I would start my period. I’m not sure what to do. Should I wait it out or go to the doctor? I haven’t had this bug of a time gap between periods since I was a teen. I’m a little nervous something might be wrong down there.

What would you do?