A while back I noticed my left testicle was substantially larger than my right, though painless. It's gone up and down in size over the past couple of months, usually shrinking after I wear an athletic supporter, lay down more, and apply ice to my inguinal area, but then swelling back up when I don't. It's definitely the testicle and not the scrotum. I do have a hernia on that side, but I'm having anxiety over the possibility that it's cancerous. I am scheduled to see a urologist on Monday, but I need to talk to someone now.