What are my options here if STD was found and I was never informed?

I separated from the navy in August 2016 with honorable discharge/full benefits and all that good stuff. I was recently going through my naval medical records looking for something and I came across an entry that said "exposure to STD". This being news to me, I was shocked. I looked around and saw that there is an entry saying I have gonorrhea! I was never informed of this and I just don’t know what to do. I’m not even sure it’s true but I feel very cheated by the naval medical system, as I always have. But now there is proof that they have done me wrong. I realize that I may not have grounds to sue but is there anything that they owe me, like an explanation at least?