How can I protect our child?

Fortunately, my ex ( we are still to through a divorce ) left when our daughter was only 5 weeks old. Since then, I have gone to his house, he as come to mine or we have met in public. Last year, he has 3 unsupervised visits with our daughter who was 2 at the time. Soon thereafter, she started having night terrors, holding her poop for days, did not want to be changed, said "I scared O daddy, when he came to visit etc. since she is my fourth child (all girls) her behavior was not something I had ever encountered therefore feeling something was amiss, I went back to only supervised visits. My question is now that I am struggling with some sort of PTSD due to the horrid psychological abuse, which still continues...how do I protect my daughter while still protecting myself? Any communication turns into a torturous rant of put downs. He demands to Skype and telephone our daughter daily but she is three so it requires extensive contact with me ( I'm sure his plan ). Unsupervised visits will put our daughter in danger as he is volition and unpredictable. Up until two weeks ago, I met him anywhere and everywhere even though it was pure torture. I can't do that anymore. He has motioned the court for unsupervised visitation stating he has no access to our daughter (which is easily provable to the contrary). I'm ready to pack up my life and run for the hills! I am so depressed, confused, angry, angry, angry and don't know how to proceed.