http://www.medications.com/effect/view/41745 I am a 41 year old woman who had an epidural injection using Kenalog in my lower back (for stenosis, disc herniation, degenerative disc disease, etc.). My first injection was on 4/1/09. About two weeks after the injection, my period started a week early. Thu, 28 May 2009 18:07:17 -0400 http://www.medications.com/effect/view/41745?item=20197 Took me about 3 months to have a regular cycle again. I was about 30 at the time and always regular. Kenalog is a steriod and steriods can affect your menstrual cycle. Its unfortunate some doctors are not aware of the horrible side effects many of us wo http://www.medications.com/effect/view/41745?item=20197