My first week & some questions about health risks

Hi friends! I just completed 7 days without PMO, and I feel unbelievably good. It's amazing. I want to go as far as I possibly can.
My only concern is about health risks... if there is any at all. I'm sure that everybody thought when they started abstaining : "will my balls explode?". I know that I'm going too far with my question, but abstaining from ejaculating for long periods of time can induce to impotence/infertility/prostate cancer? That's the only fear that I have that draws me back from abstaining. I'm starting to feel an almost unnoticeable tension in my balls and balls area sometimes, but It's there. Is that normal? Does it affect my health in some ways? And I know that if I get sexual aroused a bit to much, let's say I kiss a girl for an extended period of time, I'll get blue balls, because it happened to me once, and it was horrible, and I had to ejaculate to release the pain (I masturbated half an our after). Are blue balls dangerous? If I wait, will the pain pass?
That's was all I had to ask. If there are no risks in abstaining, I'll be super happy, because it's only been a week and I already feel huge benefits, and I love it. Thanks a lot! You are a lovely community!