Hello I'm 42 I Feel Like Someone Has Kick Me

hello i'm 42 i feel like someone has kick me in one testical and the next day the other one is sore i wake up and see blood in my undies but it goes after a few days then comes back stings a bit when i go for a piss and my piss is not as long as it used to be i seem to go more often it's been like this for around a month now i'm getting worried?