I Was Walking At Work And Something Felt Like It

I was walking at work and something felt like it kept bitting/stinging me. Very sharp pain in one area. I would feel like that at random, but many times trough my shift. By the end of my shift there is a bruise. Went to be woke up and I still get the sharp pain in the same exact area. Have changed clothes and takin a shower to make sure it's NOT something continuing to bite me. But I'm still getting the sharp pains when walking even after I've slept.