My Penile Raphe Is Splitting At My Penis Shaft. It

My penile raphe is splitting at my penis shaft. It looks very wierd. Also skin is changing near penile raphe on shaft. I am afraid of penile cancer. My age is 27. I also had a sex with a call girl 5 months ago and i used two condoms at the same time. But after the sex both condoms were intact. I am also afraid of any STD.