I believe that as long as the brain is not active, the fetus is just a formation of cells. once the brain becomes active and the heart starts beating, the fetus is alive. I forgot the exact amount of months that usually takes but in most cases, a couple would have plenty of time to decide.
Something that really grinds my gears is that Hillary is against stem cell research. I can see when she gets older and has some illness and realizes that whatever she has couldve been cured with the research she didnt support. Its bound to happen.