I recently had a lithotripsy done on my right kidney. 2 days after the treatment, i masturbated. There was no problem in the erection. I gained proper climax but i hardly ejaculated 2-3 drops of sperm. Later when i did the same act, nothing came out, inspite of having proper ejection and climax. I am having proper food and medications after the treatment. And before this i never encountered such a problem. Can lithotripsy be the reason behind it? If not, what can be?