The hard thing is not knowing how well the pregnancy will go, how the birth will be and how bubs will be. I worked and studied upto 37 1/2 weeks, I was so tired by the end of it and only give a half hearted attempt to my study. I ended up with a c-section after a long labour and a lot of breast feeding troubles. Originally I thought I could do it all. I had planned to start working from home a few weeks after birth, well it took me almost 12 months before I could start working again mentally and also there was a lack of childcare. Childcare is a huge issue, everything may go well and you and bubs might be ready for you to work again after 6 weeks, but there may not be any childcare for you to do so. If you are lucky your employer may be flexible about bringing bubs to work. Good luck!