Sore throat for 4 days down left side with swollen glands. should i go to doctor?

Yes -see doctor: It's always good to see a doctor if you have health concerns, because that way you can get the best treatment possible. Health Tap is useful for some things -but it's nice to have someone listen to you, examine you and perform the appropriate tests...particularly if these symptoms have gone on for more than a few days. A sore throat could mean various things such as Strep, a viral infection etc.