Thoughts about dying

Do you ever have thoughts about dying? Like not suicide, but just dying is some way.

Whenever I’m in my car, I think about it exploding. I have an older car and in the moment, it is so scary because I really believe that it’s gonna happen.

I’m in my 3rd trimester, and when I lie down or move too fast, I lose my breath. It makes me feel like I’m gonna asphyxiate.

Another thing that bothers me is when I am walking back from the library at night to my car, I just feel like someone is going to attack and kill me.

Why am I feeling this way?!!! Could it be because I am pregnant that I am having these vivid thoughts?