what. is. my. body. doing.

My periods have really never been regular. Even on the pill birth control my periods were 28-72 days apart. My menstrual cramps were excruciating. the first two days have always been toppled over and crying in pain. I was diagnosed with migraine with auras and was advised to discontinue taking the pill. My husband and I used condoms for 6 months but then I switched to the depo shot even though a hundred thousand people told me not to do it. I LOVED the depo. It completely stopped my periods and cramps. I did that for about a year and when my insurance approved for me to get the implant I did that in Jan of 2016. Same hormones I was told so there shouldn't have been any change. And there wasn't! A year and a half later-coincidently a few weeks after my wedding, I started having periods again. I had one in April, May, June, July and August. I wasn't tracking when they were starting because I was not used to them being THAT regular. I tracked my August start date and I should be starting my period again soon but I haven't. I have been bloated and hungry and tired so I'm not worried about it not starting but I am so confused about why they started again out of no where and how the heck they're more regular than any period I've had in my life?!?! Does anyone have any relation or is my body just THAT weird? I'm just afraid there's something wrong and its going to effect us when we TTC...