
Not me reading the omegaverse thing, LOL. Whilst I am also an avid reader of that genre, what Aiden felt was actually pretty much factual. There are cases where the husband get morning sickness during early months of pregnancy. I even read at some point that wives go over their husbands while they were asleep to trigger it at some point (〜 ̄△ ̄)〜
You can search up Couvade syndrome, if you're interested. It's sympathetic pregnancy and it's not uncommon.