Trust me on this. Damage can occur at lower temps than 105. Everyone's body is different, and you don't want to take chances. Those 105 and 107 boundaries are just arbitrary limits that I'm guessing someone with relatively little first-person medical experience must have written. Different people's brains respond differently, and teenagers' brains are particularly vulnerable to rising temps. (Toddlers' and small kids' brains are much more tolerant of high fevers, believe it or not.) I worked as a paramedic for a number of years, and we transported adolescents and adults routinely--without their consent, if necessary--for temps of 103 or greater. Someone with medical training needs to assess what's going on if you're that sick, even if it's just to identify the source of infection. Anyone with basic emergency training also checks pupillary reactions with temps in that range. Ask any ER doctor and he'll confirm that.

And as far as meningitis is concerned, you can have meningitis or encephalitis and have much lower temperatures than you'd expect. Especially with viral meningitis/encephalitis, fevers sometimes don't get very high. My mom's had meningitis twice, and one time her temp didn't get above 101.6. The other time it was 104, and she had some neurological impairment after that fever.

Glad you're feeling better. I don't see what harm one more day of rest could do you, especially after an ordeal like you've just been through. If you were my son, you'd have one more day off to look forward to.