Pain in right testicle that radiates up to right side of abdomen. not epididymis. small painful nodule where vas deferens and testicle converge?

See a doctor: While it sounds like it could well be epididymitis, it could also be a kidney stone or torsion of a testicular appendage. How do you know it's not epididymitis? Early on even the best of tests can yield false negatives though my money is on a torsion of a testicular appendage usually located at the top of testicle between the testicle and the epididymis. You should go to the ER now.

Hard to say: A painful nodule where vas deferens meets the testicle and pain radiating to R abdomen is a bit unusual. Could possible be an inflammation of the the vas or tail of the epididymis? If the pain is acute and severe get seen today. I don't think you will be able to establish a diagnosis on the internet or via telemedicine. You need a "hands on" evaluation by a physician to diagnose and Rx your case