I already was diagnosed/had PTSD (from sexual assault) for some years, but I attempted suicide in 2007 and was put in the hospital and psych ward for a week and now I have really strong PTSD symptoms when it comes to being in any hospital or hearing the beeps on the heart machines and stuff. It's not exactly the same since I was diagnosed before, but I definitely got a whole new set of PTSD symptoms just from being in the hospital (similar to your "nervous breakdown") so I definitely think it's something you want to take care of. But whether it is PTSD or not, if the treatment you are getting now isn't helping, you should consider changing doctors or types of therapy/medication anyway.