Hello Mom2Jack!
I agree with many of the things said so far. Especially the fact that, like Wifty, I saw my husband more during med school than before, and tests were always written in bold, red letters on the calendar! For some background, my husband is a PGY1 in Emergency Medicine, we started med school with a 2 year old son, we left med school with two boys (5 and 1) and a girl (3). For us, I really look back on med school as a great adventure. It was hard at times, money was a nightmare, and there were months when we rarely saw him, but he worked hard to keep me involved in what he was doing, and I worked hard to create friendships with his classmates. I really felt like I was a part of the whole process. I also ended up staying home during the day with the kids (I worked random part-time jobs at night), and while I had never considered being "at home" before we started med school, it was really a blessing for us. We lived on campus, so I became friends with my support system, the other wives (and a few husbands) in the complex. There is simply no substitute for other people who are in your same situation. Living in our own house for residency has been quite difficult because of the lack of a close support group. I have new friends who are very nice, but they just don't understand the complexity of our family dynamic. We were also able to arrange our schedules around my husband's so that we had more family time together. Had we lived off campus, or if I had worked full-time outside of the home, it would have been much harder on myself, my husband and our children.
With that being said, not all programs offer worthwhile oncampus housing, and you may need to work outside the home (talk to your financial aid officer about this....financial aid can be reduced dollar for dollar based on your income over a certain amount; if I had worked full-time, school would have cost us more than with me not working!) I suggest that you be very proactive about finding other spouses in your similar situation by joining, or starting, playgroup, bookgroup, something.
Ask more, or PM me.