Murph--
I am in a similar situation so to speak. First off, where are you in your education? Have you taken all the pre-recs and such? Because, to me, if you haven't taken them yet, I would get the situation figured out before going through the grueling courses, MCAT, applying for med school, interviews, etc.
I have only been married for three years. I got my undergrad in 1999 and was married that summer. I had decided to become a doctor in 1998, at the beginning of my senior year. I explained to my wife, she wasn't my wife at the time, that this is what I want to do. Nothing would make me happier, and I repeatedly asked if she was cool with it. At first, she said oh yeah that is great. I will totally support you and such. Well my first year into my pre-recs (I graduated, then moved and attended a junior college for my pre-recs), we tended to fight alot because I was either studying all the time or working (worked as a nurse's aide and later a respiratoryt therapist). Then to top it off, we acquired two of her nieces that are still with us (very long story). But we stuck with it. We have since had two children of our own. I was accepted to UHS in January and have been on Cloud 9 ever since. My wife was not very happy for me at first, but now I think she is. Our oldest who is 7, tells everyone that my dad is going to Dr. school. Our 5 year old thinks it is pretty cool too. Our other two (20 months and almost 5 months) really don't have an opinion at this time.
The worst part about it is that I am living solo for the first year. We currently live in a town of about 400 people and upon moving to Kansas City, our finances would drastically change. It was my wife's idea, which I was surprised with. I got an apartment and am moving in a few weeks. I plan on coming home most weekends so I will study my butt off during the week and then have the weekend for my family. I am going to miss them so much, but I have a very positive attitude, thinking it will only be for a year. Plus during the week I can totally concentrate on school and won't have to feel guilty about not spending time with them, since they won't be around anyway.
So hopefully this helped you a little bit. I have a wife and four kids and I feel that we will make it. It just depends on the support you will receive from your family. I have talked with others that are married and have kids, and they seem to tolerate it fine. You just have to set up a schedule and stick to it, always working in time for your family.
If you have any questions/comments feel free to email or PM me!
Chris