I Had Sex Yesterday And The Condom Came Off. I

I had sex yesterday and the condom came off. I didn't know this girl so I went upstairs and showered and was paranoid so I put peroxide in the top of my penis. I peed right after. I was drunk. Now today I have burning at the tip and around the head. But j ask have pain in my bladder. I was worried and made this mistake. I have only been with one other women in ten years. Two months separated and this happens. I am concerned if it is chlamydia or I have got Peroxide in my bladder. Either way I have pains. Been less than 24 hours.