I got stung by a bee on the bottom of my foot?

Yes you need to see a Doctor asap. You are definitely having a bad reaction to the bee sting. I am allergic to bees and this same type of thing happened to me a few years ago. I got a shot in my butt and was sent home with a few different medications and I felt better in a few days time. Not every person who is allergic to bee stings get all puffy and swollen. That pain shooting up your leg is one of the many symptoms of being allergic to bee stings.