I Was Beating My Dick Awhile Ago And I Beat

I was beating my dick awhile ago and I beat it a lil to hard this one time and some bump pop out under nether my dick and I thought was go alway but it didn't and now I'm concerned about it but I know I don't got no sexle Transmitted disease cause ima vergin and I don't be sexle with other people I hope yall can help me I really will be thankful