Please don't overthink. I know is easy to say than done. By overthinking it will not help. Situation may not be that bad. Allow me to share my then predicament.
We were told 3 days to 24 weeks that our younger child may not be normal or live long. We were given a tough decision to make then as termination must be done before 24 weeks. Making situation tougher, our elder child was warded during that period. We decided to keep the younger child and prepared to accept what we were going to face. 16 weeks later, we have a healthy child.
May I suggest you to speak to your family or someone close, don't keep all to yourself. You will, at least feel better after you share your thoughts. If you don't feel good to share with them, you may consider to speak to the Samaritans of Singapore via the 24-hour Hotline at 1800 221 4444.
Wish you wellππ
Alex