I am a 73 year old man in very good health according to my GP. I went to a movie a few weeks ago, and had a soft drink during the movie which lasted approximately 2 hours. Had to urinate and held it in until the end of the movie. Since this episode, I feel a very slight strain in my right groin. In addition, have felt the need to urinate somewhat more frequently. Is there a cause and effect here? Also maturbate once or twice per day. Could that have an effect? Incidentally, my prostate is not enlarged and my PSA scores are always very low. Look forward to your answers, and will greatly appreciate your response. Regards/ Thanks..... Lew