Bottom of the heel of my foot feels like it's asleep?

Okay so today me and my mom drove up to los angeles for my brain scan appointment thing, and it was about a 2 hour drive, in the middle of the ride up there i started feeling this weird feeling on the bottom of my heels, and i was dozing off every now and then so i didn't really move my feet out of it's position. but when we were walking around l.a. before my appointment it didn't bother me. The ride back my heels felt like there we needles in them, like how your foot feels when it falls asleep, but this feeling hasnt gone away, i still feel it :/ they feel a little achey too, and it's uncomfortable when i walk. I was wearing chucks today, but i had insoles in them. please help! i'm 16 if it matters :/