or it could simply be is isnt feeling well (could be due to the stress of the situation) just dont add to it. Assume you are going tomorrow until he tells you otherwise.
If you dont hear from him, maybe sent a short email asking how he is doing is there anything you can do for him or get for him to make him feel better (like medicine or tea, etc. or anything you can pick up on your way home) Stay upbeat and calm. You can do this. Stop buying yourself anxiety. If he says he cant go tomorrow, then you have some thinking to do (unless of course he is throwing up all over the place and very obvioulsy ill)
