Poor you Goat - life sounds really hectic at the moment, and having to work this weekend too - that really sucks
Hope you are back home now with your feet up?
Rosie I really sympathise with your dilemma as I'm in a fairly similar position. I do contract work and earn twice what DP does, plus the house is mine. I saved what I could while pregnant and worked pretty much every single day until 8 months pg. I always knew I would have to go back to work - partly to earn again and also to keep my place in the industry I'm in (too big a gap would mean I never worked again).
I always said I would take a year off at the very most, and so am looking to start the process of returning to work very soon (hence why DD is starting at nursery tomorrow). I'm fine about the nursery bit - it's only a half day a week to start with, and I'm really pleased I've found somewhere I like, but had slightly pinned my hopes on returning to work part time (if I could get a contract where I used to work, based on the fact that they knew me and would want to hire me again). Unfortunately, the structure has just changed there, and the work I do has been outsourced to another company and so I have to look on the open market and that means almost certainly full time work. On top of that, I don't have any close family nearby and DP is away most of the week so my support network is pretty weak. Plus the prospect of working F/T while DD is so young terrifies and upsets me so much!
So I'm afraid I really don't have any clear answers for you, but do know that finding childcare that I felt comfortable with has really helped, along with finding it before the pressures of finding a job were upon me. I second what Scarecrow said about waiting until DD is 4 or 5mo? I really understand the dilemma between SAHM or returning to a job you've worked so hard to get. I spent years in lowly-paid positions with constant debt and like you did a degree as a mature student and then never looked back. I wouldn't say I have my dream job, but it's a good living and I generally work with nice people.
I keep going through all the options - not go back to work and rack up huge debts and maybe take in lodgers, have DP as househusband (prob not a good idea), sell my house and downsize (something I would regret forever I'm sure) and so on. One option I do have though is to do a 6 month contract initially and then take more time off, although would be doing stop/start with childcare which would be really tricky.
What surprises did your DH come back with in the end? Reminds me of the husband on the Fast Show who used to come home with random shopping every time, saying 'even better than that, dear!' when asked if he'd bought a pint of milk or something 
Everyone - pleased keep your fingers crossed for DD's settling-in day tomorrow. She's been a screaming, sh*tting nightmare the last few days (and was up virtually all of last night) so fear tomorrow's session will be very short!