Is it normal the doctor touched and checked my penis like that?

I have just been to the doctors to get my testicles checked because i thought i had a lump, turns out i don't, i have "inflamed tubes", anyways, the doctor told me to show him so i lowered my trousers and underwear and laid on the examination table, the doctor proceeded to check my testicles which was expected, as he did so he was asking me where i thought the lump was and if it feels tender, he checked n fondled my balls for what seemed like forever for at least 5minutes, he then held my penis and pulled back my foreskin he then fingered and checked my penis squeezing it gently and rubbing the end which seemed strange to me as i was there about my balls. Why did he check my penis, he checked my penis for just as long as my testicles and seemed to purposely arouse it, im not gay at all, but my cock did become slightly errect as it was getting, what could be described as, played with by a young chinese male doctor. Is that normal too? What a strange experience lol. I'm 26 and fully secure about my sexuality but this was a strange situation, i didn't feel uncomfortable at all really. Id like to know other peoples thoughts on all of this.
Thank you.