Hope everything goes well for you Feathertop.

Unsure if this is of any relevance, but our 27-weeker daughter was born with a heart murmur - she was a bit anaemic because of this at the start and was on iron tablets, however the heart murmur self-resolved within a couple of months.

Also, my brother-in-law, now an adult, was born with a heart murmur and didn't have problems from it.