White color on my gland? I am worried?

I have only been with a few freeky girls the last was 8 months ago. I am done sleeping around. I always wore protection, but broke a few. its not worth the risk. I cant help but notice for a while now (I am uncut) the edge of my glands has a white color. is this normal? I dont have any symptoms ociated with of any other std. But I do notice a white color around the flange (edge) of my glands on the tip of my . Not sure if it has always been there. is this normal?