4 days late and two negative tests

My cycles have ALWAYS been regular. However, this time I am now 4 days late but haven’t really been experiencing pregnancy symptoms. I have been extremely moody, more tired in the afternoons and have insane acne on my face, but that’s it. I tested the first day I was late and again today, both negative. Is there still a chance I’m pregnant? Should I see my doctor or wait? Help!