I had no idea

my daughter was in a car accident 2 years ago. I suppose I was not mentally able to handle everything, after throwing myself into healing her, she is alive and thriving, I am changed, not doing well at all. I was recently diagnosed with PTSD. I had no idea this disease was so debilitating. Will I have these episodes where I faint, see flashing lights and smell the ICU room she was in, hear sirens & remember that pain, I feel every emotion, that terror, just comes flying back, will I have this forever? What medicine should I take? Are there tools I can use in my life to stop it before I tip over? I made tip over up, that's what it feels like, once I am tipped over, it's bad. High blood pressure too.

You need to find a good therapist to help you with this. You never processed all this trama. You were probably hypervigilant for a while too. Yes, you can slowly get a handle on these intrusive flashbacks and distrubing challenges that cripple you, it takes time but you can get these down to just memories with a small ripple of emotion rather then what you are experiencing now.
(((Hugs)))
Open Eyes

It gets better. Alot of us relive things that happened. When I was first diagnosed, I didn't know what to think. But, you have to work through it. Look for help wherever you can find it, and like Open Eyes said, a T always helps.