Ttc after mirena

Mary
New to this app. Has anyone ever had problems TTC after having mirena removed? I am 36 years old. I had a son Dec 23 2013, a daughter Dec 21 2014 and another daughter Dec 4 2015. My husband and I were planning on getting married on my birthday and our anniversary on March 18th. We weren't able to due to fu D's so we pushed it to may. So on the advice of the Dr ingot mirena put in. I had taken BC after each baby but since I was bf I could only use one formula. Got oh off of them. That's why she suggested mirena. Also so I could enjoy an alcoholic beverage at my wedding. It was my worst mistake. It was horrible. Only had it on for 3 months. So now I've been using another app to track cycles. I've had 4 now since removal. Each one starting earlier and earlier by a day or so. I did not have a problem getting pg before it so is there a chance it messed me up as to why I am having problems now?