need help, please advise...

I'm over a week into my new role and in many ways its awesome!  I actually feel like I'm in training to become something.  But today I feel tired.  I have already worked 70 hours and I have a full day and a 30 hour call left in the week.  I just almost passed out at the gym today, and I'm being an emotional and snappy wife.  I got off "early" today, at 7:30, and was so excited to actually do something fun with my husband.  But we ended up not talking and not doing much of anything because I'm just tired and cranky.  So, I'm looking for help.  I just finished browsing all the resident websites, reading facebook posts of fellow surgery residents elsewhere, grasping at straws because I need someone to help me know how to do this.  How to be a present wife and invested in the way I need to be.  Again, I think of kids and how I would ever possibly be able to juggle.  One of our chiefs is pregnant and is jokingly/seriously considering retiring her scalpel post baby.  How do I do this?  I just want someone to talk to.

me