As a general guideline, if the
wrinkles of the scrotum can be seen and appreciated, then the swelling is within a reasonable level.
You can provide support to the scrotum by wearing an athletic supporter, apply ice to the scrotum, take warm baths if there are signs of inflammation, while lying down, place a rolled towel under your scrotum or try over-the-counter pain relievers, like acetaminophen or ibuprofen.