I need help I have ptsd

i need help i don't know what to do any more I suffer from ptsd because I was abused for 3 years by an ex and he almost killed me. I constantly worry and I've gotten paranoid. I am a mom and I am always worried something will happen to the kids even if its not logical. I am afraid of everything, the dark (bc i see shadows when its completey dark), storms (bc I'm afraid of getting struck my lighting), deep water (bc I'm afraid of getting dragged down or finding a dead body), so basically stuff i shouldn't be scared of that i used to not be i used to want to live life to the fulless and take risks now I'm to scared to walk outside at night alone and yet i used to. go camp alone in the woods for days when i was younger.I feel like I'm losing my mind. It effects my marriage and my relationship with my family bc i can'trust anyone i alwasy feel people have alternative motives. Please help me.