My husband and I were going to try to have a baby and then I was ...

My husband and I were going to try to have a baby and then I was rear ended in a car accident causing nerve pain in my lower back. I had the injection without being told of the irregular period side effect even after the doctor knew we were trying to have a baby. I am very upset. Has anyone had luck regulating their period after a Kenalog injection? I had the injection 4 weeks ago. I had very predictable periods prior to the injection. I missed my period 2 weeks after the injection and then a week later began spotting that hasn't stopped for 4 weeks. It gets light and then heavy with no indication prior to being heavy. There are clots. How long does it take for the cycle to return to normal? I think I am getting depressed worrying about if I will ever be able to have a normal period and have my baby.