Infection from pedi?

On Saturday I decided I wanted a mani/pedi to help me relax. So I went to a place I've been before, and really liked. However, suddenly my big toe is red and swollen on the side, and hurts to stand or put pressure on. I'm not sure if it's infected or an ingrown from being cut incorrectly... Sorry for the gross pic, but I'm not sure if I should go to a doc or just add neosporin and call it a day. Thoughts, ladies???