Your orthodontist isn't the one who will take out your wisdom tooth. You will have to see an oral surgeon for that one.
Why didn't your dentist give you an antibiotic to help with the swelling/infection?????? You really need that to help relieved the pressure/pain and stop it from spreading until you can get into surgeon.
Tylenol#3 sucks for tooth pain - you might be better off taking 800mg Motrin. Ibuprofen is better for tooth pains - you can buy over-the-counter and take up to 800mg every 6 hours. 800mg is prescription strength.
Side note - you mentioned a lump in your cheek. Most of the time this is nothing more than a blocked salivary gland but I had a patient last month who had one. We took a panoramic x-ray and it showed up black on the x-ray. She had it biopsied and it was Non-Hodgkin Lymphoma. SInce then they found it in her stomach too and she has started chemo with a 99% chance of survival.
I am assuming your young due to the ortho and wisdoms so oyour odds are great its nothing to worry about but mention it to the oral surgeon - they are the best to evaluate that too while your there
Hope this helps - lauren