Lost

I know this post is old, but I am 28 a mother of three, n I have been having these weird thoughts, that this all a dream that I had n now I am living, I smile pot for a whole but stop about a month ago, I think the world is coming to a end, n I am scared to get out of my bed, I have had thought bout what if I loose my mind n hurt my kids n myself, I don't want to I love them way to much, but I am scared of the thoughts my GF says I am ok I just need to be busy, but she doesn't understand how scared I am to leave my house, I also have had thought about people trying to hurting my family. Like blowing up our house, I just want this to stop, I find myself searching the web looking for answer, oh even writing this feels familiar, I just over this it is messing up my love life being a mom please help, am I losing my mind?