I am glad he is ok and that you are at least having peace of mind about that.
my 2 cents about the checking in comment: don't worry, men are like that, and worse sometimes. my hubby is a shining example: he just hate the constant questions (and I am question - queen... so you get the pic). he hates where are you? are you ok? are you upset with me??? etc, and frankly I can see his point by now. I have learned after some time that it can just be too much - now I can't say for yourself of course, this is based on ME, because I am terrible like that
. my point is: he may just feel stressed bec he is very busy at work and maybe he feels that you are adding to it, kwim? (i mean to say this in a nice way and hope it comes across like that).
what I do in this situation - no asking whatsoever, no discussing and no arguing. (you worried so only fair you said that). we are also long-distance so I know where you are coming from. I just chat away about myself, and seriously it works. I may casually ask how his day was. you wanna talk - here is an invitation. you don't - ok then. it helps for his peace and my sanity, kwim? I just had to stop worrying. period. and be the fun person he can relax with, or share my work issues etc to concentrate on something else.
now my husband is a real gem and star - and I mean that from the bottom of my heart. so it is worth whatever things we are facing with each other -
(had to say that so it doesn't sound so negative...). i hope it all works out for you.