2 month old got shots today now has 101.7 fever?

Likely the shots. I'm assuming everything was wonderful at the visit and your child was perfectly healthy. If that's true, then most likely a small fever like this is due to the shots. A dose of tylenol (acetaminophen) should help, and contact your doc for the correct dose. However, if the fever continues, or other signs like lethargy, or poor feeding occur, then call immediately.