Pain in left testicle. One day at work, I was fine in the morning, but in the afternoon I got up and the testicle would hurt. Admittedly, I was wearing tighter pants that day and I thought maybe I just disturbed it a bit. But it hasn't really gone away over the past few days. When I wake up in the morning it's fine, but as the day progresses (I sit down all day at work), it gets worse. I find some relief when I am standing (walking) and lying down. It's not a serious pain but rather an annoying discomfort. Nothing seems unusual about the testicle, no swelling or redness, normal urine.