I have similar experiences, unfortunately. Often the thoughts are accompanied by a spontaneous scream or gasp. In my case they pass quickly, but I've not found anything to prevent them. It is possible the meds (antidepressant and mood stabilizer) keep them from happening more often, but, as it stands, these are daily events.

In my case, I started experiencing these thoughts after the onset of depression.

Hidesad, have you discussed this with any doctor or counselor? Did they have an opinion about these types of intrusive thoughts?