Remind me next time I am on cycle to not get a tetanus shot

So I finally went to the doctor on tuesday (havent had a primary care physician in NC since I moved up here) and when I couldn't actually tell them the last time I had a tetanus shot, they suggested I should get one. That is all fine and dandy, but I forgot how the shot can leave lingering pain. Pushups when your shoulder feels like it has a giant bruise is not fun. At least another sparing class is in the books.