The c-section scene did not sell it for me.
Let me tell you, Shaw would have been in a different world of pain than it looked like she had.
The type of anaesthetic that is used for c-sections is epidural or spinal - not just some spray over the skin. I have had abdominal surgery and because of a faulty epidural valve, I actually woke up without anaesthesia, so I know what it is like.
Also, you can't just staple up the belly and get up. The uterus would have to be sutured. Then there are a few other layers that have to be stitched up before stapling the skin. After that, even with proper anaesthesia, your belly is very sore, and moving around can be a real chore. You have to be careful or you will get a hernia. These are not things that will change even with 80 years of medical advances.
Running, climbing and carrying around android heads? ... forget about it. Maybe if they had waited a month before returning to the craft ...