Think of it as your first couple weeks of running, or lifting weights. Some extra advice for you.. Once you get over the soreness, make sure you start upping the intensity on your stretches as you go. I promise your dick won't fall off lol. My first couple months of Penis Enlargementing I didn't see as much gains as I should have, because I wasn't applying enough force with my stretches.
Stay dedicated and read the forum here to gain knowledge.. The gains will come.