Sneezing fits after vaccination

I gave my cat intranasal FVRCP vaccination Friday. On Tuesday I noticed a couple sneezes and last night he was sneezing so bad it woke me up and worried me. 

It is like 3 or 4 loud sneezes in a row and then more 5 minutes later or so, not sure. 

He is fine otherwise, eating, going to the bathroom and playful/happy.

Is this a bad vaccine reaction?

He had the FVRCP shot at 12 weeks prior to this.

Your kitty may be reacting to the "R" in the vaccine, rhinotracheitis.  Watch for signs of an upper respiratory infection like runny eyes, runny nose, congestion, lethargy, change in eating habits.  If you see any of those, a trip to the vet is warranted.