Cycles after D&C

Amy.
I had a d&c on December 16th. My period returned in 6 weeks and was a normal cycle. The month of February I didn't have a cycle then March 6th I had a very light one that only lasted 3 days. This month glow had my expected period April 15th and AF showed her ugly face today. Is this just my body getting back on track? Has anyone had messed up cycles after d&c?