Do you think this bug bite requires medical attention?

I got bit by something on my toe at school on friday. When I got home, my toe was swollen and burning, the large bump pretty apparent. I soaked it in the bath and then applied calamine lotion. After a while, I put a bandaid and neosporin. The next morning, the bandaid had fallen off and my toe was just all red, but it was normal size. A few hours later, it started itching like crazy, but stinging when I touched it to scratch it. Now, sunday, it is doing the same thing and is super swollen, red, burning, and itching. Should I go to the doctor, or just wait and see if it goes away?