always late to the party. Seems like the main issue is feeling like you have bothered the professionals for no good reason and then feeling guilty. Man can I relate. So, here is my take. It ain't worth the concern and the ifs. Call your doc and say hey, I am way overdue for tetnus shot and had a small peircing with a rusty nail, can you fit me in for a shot? Easy as pie, prob no doc, just the nurse.