I used someone elses razor and now im worried i might have gotten and sti /u/chonchdad Sex

Im a teen and a few months ago I confused my sisters razor for mine. In results of that I got a rash on my leg. However, I had used this razor on my private part too. Now im worried I may have gotten chlamydia or something from it. I dont know if it is possible to get an STI from a razor. I know my sister doesnt have HIV or hepatitis. However I dont know if she doesnt have an STI because when i was younger I heard something from my mom about her having chlamydia. Im sure now that we are older she must’ve cured it with prescription. I havent had symptoms since STI’s usually give little to no symptoms. I get yeast infections often. My private part does get itchy sometimes but im not sure if its my my yeast infections. What should I do?

Im a teen and a few months ago I confused my sisters razor for mine. In results of that I got a rash on my leg. However, I had used this razor on my private part too. Now im worried I may have gotten chlamydia or something from it. I dont know if it is possible to get an STI from a razor. I know my sister doesnt have HIV or hepatitis. However I dont know if she doesnt have an STI because when i was younger I heard something from my mom about her having chlamydia. Im sure now that we are older she must’ve cured it with prescription. I havent had symptoms since STI’s usually give little to no symptoms. I get yeast infections often. My private part does get itchy sometimes but im not sure if its my my yeast infections. What should I do?