Horrible thoughts and images

I have been having horrible thoughts, images and dreams for a while now but it seems to have gotten worse recently.

It's not thoughts of suicide or me harming anyone, it's a uncontrollable fear that something will happen to my child. Someone could break in and hurt him but I can't get to him, he falls and I can't catch him, someone takes him and i can't get to him, I can hear him screaming and feel his fear and I fight but can't get there. It keeps me awake, its breaking me and it's my immediate thought for anything, going out for the day, walking home, just going to bed, there it is, I can see it all happening and it's so real, I have no control over it and I can't stop it happening to me. I'm so tired and stressed im really snappy and get angry over stupid things so fast.

What is wrong with me?

I'm scared to go to the doctor because I fear theyll think I can't look after my son.

I've tried talking to my husband but he ignores me.