Is this crazy? or has someone else felt this way?

Lately I live in a constant state of worry, fear, and distrust. Everything I say, I regret for fear it will be misunderstood or used to backstab me in some way. I don't trust people, including my friends and boyfriend, not to betray me, talk about me behind my back, or hurt me in some way. I am afraid of being alone forever, but at the same time it seems like it would be a relief because no one could hurt, disappoint or abandon me. I even feel like I will let my family down at some point and they will turn on me. I worry about what people will think, read into actions, and get worked up over things I know are stupid. I know someone will say get meds or just get over it, but its really not that simple. I have tried prayer, talking to my dad, trying to get my mind off of it, but its still there. I am still constantly dreading the next bad event, betrayal or disappointment. What in the world can I do? I am only 19, I don't want to live the rest of my life like this