How many paracetamol can I take in 4-5 hours?

I've already taken two at once, and I rarely take more than three a day. I have this unbelievable pain in my right ear and I have a fever (it's an infection, I can tell because I've had it before and obviously I can't go to the doctor with it in the middle of the night). I took two about 2.5 hours ago, and now the pain is back - so how many can I take now? I'm 15 by the way. Pretty sure the limit for two a day is 12, so..