Sexual Assault Flash Backs

I was sexually assaulted almost four years ago and have gradually been healing.. however it's 10pm and my partner is fast asleep and I have just had the worst flash backs that I have had in years.. I can't stand to be touched right now and currently sitting in the corner of my parter and I's bedroom. He woke up when I frantically got out of bed and when I told him what happened he went back to sleep.. I'm feeling incredibly alone right now and my tears keep falling so.. I don't know, I just needed to say it.. I don't know what to do and I can't stand the thought of getting back into bed and having a man's hands on me.. Even though he's the man I love, a man that would never do wrong by me, and never cause me harm; I just can't right now..