Am I going through a mid life crisis?

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I am thirty- six and a single mother of three children. Right lately I have been wanting to reach out to people that I went to Elementary School with and to people that I was raised up with as a child. I have recently started a Facebook page. I could have started one years ago but had no desire to reach out to anyone.
I did not have the best childhood. Both my parents were drug addicts and I was in the system for many years. I have no desire to let my parents back into my life for the simple reason they are still on drugs and treat my children badly. I have not spoken to them in three years. I have been thinking about my past a lot lately and some of the mistakes that I have made. It feels so refreshing to meet and talk to people I knew as a child. I don't know if I/m going through a midlife crisis but I have this strong urge to think about the past and to reach out to people from my past, what is wrong with me?