The question regarding morality is based on what you posted.
An expectant mother can feel movement of her unborn as early as the 18th week (or sooner), which indicates a developed nervous system.
If you are expecting your first baby you can expect to feel your baby for the first time between 18 and 24 weeks gestation. If this is not your first baby you can expect to feel your baby a bit sooner than you felt your first. This is usually said to happen because you know what you're feeling for and your uterus is more stretched out than it was the first time around
http://www.allaboutmoms.com/quick.htm
Therefore to assign the ability to feel pain as the 26th week is arbitrary. However, the instant a fertilized egg starts to develope you have life. So the real question is when does life begin.