TaNasha I feel your pain hun, and the anxiety you must be feeling right now must be hectic!
My baby is also 1 in 1000. She has a few congenital heart defects, had 5 in total. 2 were fixed surgically, 1 has closed on its own, 1 they are not worried about, and 1 they will fix when she is an adult.
Kaylee is 7 months old and had her first heart op at 8 days old, it was life or death. We never had a fetal anomaly scan so we did not know it before birth. We had good blood results and a low risk pregnancy, and there was no indication of any problems so when we found out we were devastated and as with you, we never imagined something like this could happen to us. I have 2 friends whose babies are/were very sick. One sadly passed away at 3 months old, while the other is beating all the odds and doing amazingly well, so thats 3 people I personally know (me included) in my circle of people I know which is maybe 300?
The feelings of 'its not fair' and 'why me' are very real and i still feel them every single day! But truth is you do what you have to to cope, you feel pretty crap and sad and desperate but you go on, cause thats all you can do really.
But I really hope your amnio comes out with good results and that your stress will come to an end soon. Truth be told you'll always be stressing about your LO though, thats part of being a mom, but hopefully you wont have to stress until LO arrives and you can enjoy the rest of your pregnancy

I will keep praying for you.
Meantime, if you want to chat about your feelings with someone whose been there, you are most welcome to contact me.