The horrible dreams will pass and the good dreams will return, it just takes some sober time.
Stick it out -- you can do it. Realize that its just another aspect of your emotions "waking up" and trying to work themselves out again. You've been putting them "on hold" for a while, and they've been accumulating -- like an old credit card bill that's been collecting interest.
It might be scary for a while -- you might even wake up screaming a few times. Its just your brain and mind working through it all. Don't discount the effect good nutrition can have -- it provides your cells with the raw materials they need in order to repair the damage and get through this period quickly.
Hang in there! You can do it!