I'm 15 And Very Active I Play A Lot Of

I'm 15 and very active I play a lot of tennis I run a lot and I do a lot of fitness. So the other day I went water skiing and I ended up falling and hitting my last 4 toes on the ski when I fell (right foot) but this only effected my second to last toe it's about 4 days later and it really hurts when I walk and it's purple, blue, swallowen and part of my foot is swallowen. What should I do?!?