Prostate cancer

[bandaid]

Hey I had radiation seeds implanted and it didn't get all the cancer so the doc gave me cryotherapy, they froze the prostate. So before the freezing I performed well, less cum after being radiated but I got hard and could penetrate and get my wife off. Well now my dick stays semihard, can't penetrate so I got a vacuum pump last night. It hardens me but also tries to pull my balls into chamber, what am I doing wrong. I couldn't get it hard and keep it that way before I put the cock ring on. Any ideas? My wife is getting real horny