No proven connection as far as I know but there is research about orgasm frequency and prostate cancer. Suggest that you don't worry and search on-line if it continues to prey on your mind. Definitely see doctor if you pee blood or get new urinary symptoms.
Some inverse correlations claimed with frequency of orgasms, but a much higher correlation with a diet low in vegetables. If you're worried about Prostate Cancer, eat your veggies and relax. Keep rebooting and eat your brocolli.
To see any real prostate benefit means having a minimum of 21 orgasms a month. Even for newlyweds that's a lot. Eat your fiber.