Vaccines: 24 Hour

How to handle fever after shots on infant?

I am a first time mother with a four month old. He had his second round of shots yesterday and did great all day. I gave tylenol every 4 hours until bedtime and then this morning he had 101 fever. I thought you weren't supposed to give more than 5 doses over a 24 hour period? I went ahead and have him some but I am not sure what to do!