Am I crazy to dream about going to med school? I am a wife and mother...is this too much to handle?

And I work to support my family. I have a wonderful supportive husband who really tries to support me in everything that I do. The major issue is that I keep feeling like I have wasted my life and made less than optimal choices in the past. I feel like I coulda shoulda woulda been something or done something. And I cant live my life like that. I dropped out of university in my third year in 2003 and since then I have had two babies, emigrated and started my life over again and been married. I have a 'career' already. I make decent pay. Just I am not happy with where I am in my life. When I was in university I didnt really make great grades so I pretty much plan to do my core cles over again and get a bachelors and 'once my life calms down'. I just cant sleep at night wondering if this pursuit is futile. I mean when as a mom does your life ever get to the 'calm' stage. I just wonder if this is a pipe dream. My husband is so content in his life. I wish I had that peace. He is supportive of me going to school. Just I feel really embared by this burning desire I have. I feel like people are going to say 'pah, pathetic... you in med school... ha ha'. I am hard working, industrious, and I would say intelligent. I know I have the stamina to do something like this. I feel like I have all this drive and ambition and no where to channel it to. Do you know how hard it is to talk to people about this? I mean I sound like a spoilt stuckup diva. Like regular life isnt good enough for me. But its not like that. I feel like I have wasted talents. I know this will be a struggle. God only knows how we will pay our bills if I do this. But I just cant get this idea out of my head! Am I totally nuts?