How do you heal an infected toenail?

I don't quite know what's going on with my toenail but about a week ago, my toenail was hurting a bit and I thought It was an ingrown toenail so I make sure I cut it and stuff but now, it hurts REALLY bad and it's slighty red, its very tender to the touch and occasionally, if I push on it, liquid comes out. I'm a dancer and so this is most definitely extremely painful for me especially when I'm trying to wear shoes. Please help! It hurts and I just want to fix it :[