Hi JanePleet,
I am sorry that you are also having a traumatic time. I don't know if you are aware of Pete Walker and his 13 Steps for Managing Flashbacks. I can't post the link as I am new to this site and it won't allow me to yet. A google search would give you a link. He also has a book which has been a great help to me.
After talking with a GP recently he was honest enough to admit that we can seek treatment but it is likely that we will always have events which trigger setbacks. I know how hard it is for you when unpleasant memories and emotions are brought to the surface.
I know you will get back on track, knowing that this time will pass is one of the things that I say to myself to get some comfort. Best wishes to you