I had to change all my plans when I got pregnant as an undergrad. I did end up with a good degree but put the Master's etc. 'on hold'. In the end though, as you are fearing, I had to practically retrain and it really set me back. For me it was tough but I was determined and in for the long-haul. I don't regret my daughter, naturally, but it completely changed me and the journey I had previously mapped out for myself. If your husband is supportive then it's likely to be easier, but not easy - think about what your priority is now, because once you've got a kid, THEIR needs always come first.