Wisdom tooth

Im

So I’ve got one of my wisdom teeth that has partially erupted. Not really been painful at all, it just kinda appeared one day😂but the thing is, I think it’s infected. I don’t have the money to go to the dentist so I’ve no idea what to do. My dentist charges £37.50 just for a standard exam and that’s the cheapest in my area, I’ve already looked into finding another dentist😂😭

Anyone else have this happen? What did you do?