Yesterday, I punctured my arm on a nail from removing an old deck. It was not very deep, some bleeding. I licked the wound clean and continued working. After 2 hours I noticed some pain and light swelling. We put on antiseptic and a band aid. I have had tetanus shots in my life, but last one is min 7 years ago, could be 15 years ago. I am 58. The swelling is quite mild , 2 cm diameter around the puncture.