Car running Hot

I have been driving my car for a couple weeks now since I got it done. Seem to be running just fine until a couple of days ago. It usually ran about 200 now it seems to be running at 220. I checked the engine at the water neck with a temp gun and it was reading 220 and then I checked the top of the radiator and it was reading 130. I think the thermostat is bad and not opening. Even thou I only have a few hundred miles on the car I would doubt the thermostat is bad. I plan on pulling out the thermostat and boiling it to see what temp it opens and make sure it opens up all the way. Any one have any different advice.

Thanks