For me, if the results are not good. I would consider terminate the pregnancy **touchwood**
Reason is becos my colleague herself, she got a down syndrome elder bro who is 8yr older than her. But he only has the mentality of a less than 3yr old kid. The mum took 8yrs to have the courage to conceive my colleague due to this matter.
Everytime she would complain to me how frustrating and the inconvenience it is to have such a mentally challenged elder brother. She blamed herself for being the unlucky slibing. Sometimes she couldn't help but wonder why other people could have normal healthy siblings but not her? Being the younger sister, she has to take care of her elder brother instead.
Her mum also made her promise that in the event if she passed away, my colleague has to take care of her brother for the rest of her life.
So when my colleague found a bf, she must make sure that her bf should be able to accept the fact that her brother will need to move in together with them one day if her mum ever pass away. And who will take care of the brother at home when both of them are working?
But of cos, this is just one side of the story told by my colleague herself. I hope whatever i say would not affect your decision. Stick to your own beliefs, the child is yours, his/her life depends on u. Think carefully.