I waited a few months after son #1 was born (no episiotomy but I did tear so there were stitches) , more because the thought of sitting on the saddle scared me more than it should have. Once I finally did it, it was totally no big deal. I waited less time after son #2 (tearing w/ stitches again) - can't remember exactly when I hopped back on, but I know I was pulling him in the bike trailer (strapped in to his carseat) at 3 months. Not long rides, just around the neighborhood to the pool, etc. but there were no problems.