Hi Ms.T.
Welcome to the Forum :hello:
Can only say, "moderation" is good if possible. If you are feeling that bad, it's good to let it out. Being that PTSD is so associated with stuffing your emotions, to let some fly is not the end of the world. Try to (possibly) rest too, be gentle with yourself, do something distracting you enjoy. Make a list and try them one by one. Vent on here if you feel comfortable. Call someone, even a Crisis-Line. It's always a good idea to make sure there aren't other issues going on (physical ones). Depression, too is frequently seen with PTSD; there is really good info on this forum about stuff like that.
If anger is the outburst, try to get away from situation, do deep-breathers until you can gain perspective. It's not worth the damage it does to yourself.
Try to follow the basic H.A.L.T Principle- Are you hungry, angry, lonely or tired? Two or more of those is likely to send you "over the edge" more easily.
Dear Luthien am sorry about your dad. That's sounds like it's "anticipatory grief" which is normal and "healthy" (but horrible). I remember my mom getting diagnosed- it was actually worse than her death. And my dad, well, -there was no warning and that's when 99.9% of the grief got stuffed for me and was/ is still a source of great problems and was when this PTSD started for me.
-It is wonderful that you have such a caring, supportive husband.
OMG, -now all I can think of is "Meathead". :)
I know it is so hard but try to enjoy each day. One thing I have learned is what "time" a Dr. gives is irrelevant; sometimes they are right, other times very wrong.
Best wishes to you both.