Well, yeah, sure, you're fine without STD's, but you have no idea about the fella...even if he says he's clean!
Also, I want to warn you, just because you haven't had a period does not mean you can't get pregnant! The fact that he wanted to take off the condom is not a good thing.....very irresponsible! I hope you didn't engage in contact without it!
You definitely don't want to contract any STD...and you definitely don't want to get pregnant. I suggest you refrain from contact with this fella...he doesn't sound responsible or respectful to you!
Patty