You have already braved through all this in your previous pregnancy
and there is no reason for why you will not do it again.
Since you have experienced some problems in the previous pregnancy, If I were your treating obstetrician, I would collaborate with a cardiologist so that he knows your case right from the beginning. Also, I would arrange for delivery at a place where all emergency facilities along with trained physicians and cardiologists are available so as everything is managed easily.
I suggest that you also discuss this with your antenatal care provider in your next visit and arrange for the things.
Please try to get over the anxiety
as it increases the heart rate
and leads to more problems. Think positively about the new baby that is coming and all the joys that it will bring.
Best of luck and have a good day!