The general rule that I see tossed around is 24 hours. I think you're response is perfect: "I'm fine, thanks for asking." If that's dishonest, then say, "I'm improving daily, thanks for asking."
Say nothing else. I'm a 3-year veteran of WAW, affair, the whole 9 yards. When someone is in the 'fog', there is very little you can say or do - it is agony to release, but you have to put your focus on things you can control.
I think it's awesome that you got out and did something fun - keep this up! I know that if you feel like I did, you feel like you "failed" somehow, but the truth will eventually come out.
I'm all for establishing boundaries, but my suggestion is to only take actions that you won't look back and regret - i.e., the screaming phone calls, nasty texts. They may get something off your chest in the moment, but they rarely solve or fix anything.
