I have felt similarly before, but I do think it's important to remember that what you heard in his voice might not have been annoyance and even if it was annoyance, that annoyance isn't necessarily directed at you or a result of anything you did. He could just have been having a bad day and he might not have been able to regulate his own feelings. I think it's sometimes very difficult for those of us who suffer from PTSD to remember that other people's feelings, reactions and responses aren't our fault or responsibility because we've so often been told that they are, explicitly or implicitly.
If possible, please do something really nice for yourself (a warm bath, a yummy treat, whatever feels good for you) and be gentle with yourself.