Should I get tested for STDs?

So basically I fooled around with this guy who has a reputation of getting with a lot of people. We didn't have sex but he rubbed his parts on mine. He said he got tested and didn't have any but I don't know if I believe him...

Should I be worrying? Based on what we did...is there a high chance that I caught something from him? It happened about 2 months ago and I haven't noticed anything physically wrong with me (though I know sometimes there are no symptoms). But idk I wasn't really worried about this before (stupid, I know) but now I'm kind of freaking out.