Sorry for all your losses girls
I when you want something so bad and you finally get it you are always worried someone is going to take it away. I have just about stopped (just about) worrying what I might find on every trip to the loo.
My sister had no sickness and she bled and went on to have a healthy baby so try not to panic too much about mild symptoms - they do happen like that for some girls.
Perhaps given your history you could ask for an early scan?
x