Semen in urine after being aroused.

I am away from my wife for the past two months. I have had two nightfalls and semen in my urine almost 10 times during these two months. Majorly this happens when I urinate after being aroused for sometime. Suppose I am heavily aroused in the noon for some reason and when I urinate in the evening, I could find several drops( 5 to 10) drops of semen in urine. I dont seem to have any orgasm during that arousal. I dont masturbate as I wanted to use this time apart from my wife for practising spirituality and celibacy. But I am worried about this. Is it normal? Should I be worried about this? Does this liquid actually contain sperm? After this leakage happens there is exhaustion and a very little pain in my penis for 30 mins. I am amrried for almost 3 years  and I have no problems during sex and me and my wife have not planned for a baby yet.