Lyn,
Often when one is suffering with many things like PTSD and Depression etc.. the conditions can seem to blend into one and you end up feeling confused with what is causing you to feel a certain way, like are you overwelmed, irriated because of the depression or the PTSD or both. I have multiple diagnosis too, PTSD, Depression, Anxiety, Insomnia, it lends itself to a big list of symptoms. I tend to know very clearly when it's the PTSD symptoms I'm feeling. What's good is that you are telling yourself that you are not OK. keep leaning on all the support you can get.