I'm getting sick of OH's cavalier attitude toward spreading illness, quite literally much of the time.
He appears to have a very strong immune system and never gets sick, even when everybody around him is laid up with whatever at the time.
I've lost count of the amount of times he has brought his older children here when they're full of cold, tonsillitis, D&V without giving me so much as a heads up.
Which brings me to now. Me (pregnant) and my two have had an awful virus (covid negative) for a week now, coughing sneezing wheezing now me and DD have been vomiting and have a bad stomach. As usual OH is just fine 
Its his day with DSC today and he has no intention of forewarning his ex that we're so unwell, so he's going to expose them to this just because he doesn't want to disrupt plans.
His ex is a single parent who also has a toddler so if she were to get this then what's she going to do when she needs to be laid up herself?
AIBU to think he's incredibly selfish and tell him exactly that?