Tetanus risk. If you have an open wound that occurred when outside or has been in contact with soil or there is a puncture wound these are higher risk for tetanus. If it has been > 10 years since your last tetanus shot or you don't know when it was - that also ^'s risk.
See below. This is a problem that necessitates a face-to-face meeting with your doctor. This will allow him/her to examine you, ask specific questions. And possibly order tests to find out what's wrong and what to do to help you.