Eww...my sons toenails. Please help.?

My 12 year old soon to be 13 son has a problem with both of his big toenails. He told me there was a problem with his toenails. There were bubles under them. I said dont worry abut it you wimp he said okay. Then later he poped them and he said this liquid came out with a little bit of blood in it. He continued to pop them for then next 2 days because the liquid was not all the way gone. A little bit later his toenails turned a clearish yellow. And he said there is like some crusty stuff under his toenail. I think its toenail fungus. This is how it started. He went to a public pool one day and he got pushed into the pool with all his clothes on. He didnt go plan to go swimming so he kept all his clothes on and went back out. He had his shoes on with his soxs for about 7 hours. They were still wet. I think the bubbles were the cause of that. Maybe the water made those bubbles. Well i dont have the money for my son to get checked out by the doctor, He dont have one. Help!