Last Year I Thought That My Testicle Was Enlarged. I

last year I thought that my testicle was enlarged. I saw my doctor about it and she referred me to have an x-ray. results were negative of anything. At this point in time my left testicle appears even more enlarged than last time I spoke to her of it. What do you think. I am 67 yrs., somewhat overweight, take alot of pain medication due to past surgeries. back x3, rt. shoulder, left knee, hernia.