Does Vyvanse cause testicle side effects?

YES! I could not find anyone else who has side effects "down there" But while I am taking Vyvanse It is like my sack draws up, and gets tight, and my penis contracts also! Its like I just took a cold shower...except it lasts for hours

I am experiencing extreme pain from the penis all the way beneath to the anus as I climax - this lasts about a minute and a half. I've been on Vyvanse for about 7 months now and other than this one side effect it's been a dramatic (read GOOD) change in my life-