What's wrong with me?

Hello everyone
I'm male and 26 yo
My post is a little long, so thanks in advance for your patience and kindness also I'm not a native English speaker so I apologize if I write something wrong.
I made terrible mistakes regarding my health, and I damaged my body, it is related to my fertility,
By these mistakes that I made I have to be with a disease for the rest of my life, I had the chance to cure it but wasted it.
I got to know about this issue about two months ago, doctors said that it is nothing to be worried about, due to their sayings it will not affect my libido but just my fertility, it causes subfertility, with high probability I can have babies but if I couldn't, there are many artificial ways to have babies. Doctors said although you have this disease, there is no need to even think about it, its not important.
Therefore generally although I have this disease, it shouldn't be a worry.
But after knowing this permanent disease, I was shocked, I was sunk in regretion and guilt and asking why did I made this to myself, why should I have this disease for the rest of my life, I was getting depressed, sometimes I couldn't breathe properly and my heartbeat was raised a lot also I was analyzing the information and sayings of doctor and terrible scenarios in my mind a lot, it was like obsession.
Now that 2 months have passed since then, although I know I shouldn't think about it, I still have those disturbing thoughts I still analyze in my mind, I struggle in my mind to convince my self its nothing to worry, I dont enjoy my life, whenever I see a girl suddenly I think my libido is lowered because of this disease(although it is not), when I see my friends I remember my disease and feel inferior, I have lost my self confidence, I have false sense of a little pain down there, sometimes I feel guilty, I fear the future and what will happen with my disease, I fear my hormones get messed up and my libido get affected although its not going to happen. I'm stuck in my thoughts between fears of the future and convincing my self that its nothing to worry about.
I know all these feeling are all lies and I know If I overcome them I return back to my normal life but they keep coming and I don't have enough control on them.
what's my problem? OCD, PTSD, Hypochondria, or any other thing, how can I overcome them?
Thanks again everyone, I hope your guides and kind helps rescue me.