Yes, I suppose my thought is that sometimes, on a very specific topic, a few people come along with lots of knowledge and we do learn something.
It is interesting that no HCP has come on and said 'oh yes, that's well known and evidenced / found not to be the case / there's something more to it / it's being looked into'. The only input from HCPs had also been anecdotal. That suggests but doesn't tell us, that there may not be a known link.
So, I'd be going back to your midwife and asking her to point me to the evidence - then perhaps querying why she was sharing untested anecdote with patients, or passing off personal observation as medical knowledge.
But, like you, I'd take any declaration about 'how things are going to be for me' with a big pinch of salt and as 'cheery nonsense chit-chat' anyway. In the end, unless you have a very specific known risk, variations at population level will have no bearing at all on your, unique, personal experience.
So good luck and I hope it is a quick, easy one!