To say not today?

[Cakeycakecake]

My youngest sons dad is due to see him today. He's 7weeks. Unfortunately though, my eldest has been up ALL night being sick. The joys. We are all totally exhausted from such an awful night.
Aibu to say to baby's dad not today? He can't be around my eldest, contact is arranged when my eldest isn't here, in school or asleep. I have no one to take my eldest or the baby to be around dad. It's very much supervised right now, I'm certainly not comfortable allowing him to take baby alone yet.
For the sake of background, he's never had him alone and we are working towards that, he sees him several times a week though which I happily facilitate.
Aside from anything else, I am utterly exhausted and having spent all night cleaning up vomit and consoling small child, I don't want to have to figure out how to accommodate him today. I've never cancelled before.

I think a vomiting bug is a good enough reason to cancel, however would you be happy with dad downstairs with baby and you upstairs with eldest sick son? If you have a monitor you could have it in living room downstairs so it's not completely unsupervised.

Vomiting bug definitely a good reason to cancel especially if you are concerned about him being alone with the baby for an extended period if your eldest starts being sick upstairs.

Of course you can cancel. I don't doubt some will post, coming up with convoluted ways you can make this work. But as the resident, knackered parent with all this going on, your rights to make things less hard count for a lot.
I wish you some rest.

Cancel. He can show you how reasonable he can be and understanding that children get ill and plans have to change. Offer a visit in a few days when your eldest is fully better but remind him the baby might get it so it may have to be a week. Offer to send photos.