Strange feeling at tip of penis

I'm crossing my fingers that this isn't an STD but something else I did in stupidity.

Me and my partner were both virgins and have started to have sexual intercourse. She is on birth control so I never used a condom. After a pregnancy scare (which was never really a scare in the first place) we decided i should pull out when i finish. When i would go she would catch the cum with cheap toilet paper, but pressed against the tip of my penis as she did it. After a couple of times, i decided it hurt way to much to keep doing it like that (she would literally have to rip the toilet paper off the tip of my penis after i went)

Now though, a week later, the tip of my penis still feels a little weird, and I've been urinating more. It doesn't itch, isn't painful, or anything like that.

Could it be possible that doing that toilet paper thing hurt something within the tip (or the tip itself), or in some crazy coincidence of having unprotected sex for 3 months i suddenly contracted an STD after doing that toilet paper thing?

Thanks!