Lately i have been very worried about some thoughts that i occasionally experience. I usually experience these when im very anxious or have been obsessively worried about something for a while. The thoughts that come are for example i was in a shop and asked a woman if she knew the price of this purfume and she said that she didnt know and would have to go and check. So i said oh sorry and then in my head said but ur not really are u? in a like nasty way. These thoughts seem to just come and cause me great distress when they happen, im just worried that its more than an intrusive thought like maybe a voice and a symptom of schizophrenia? The voice is my own inner voice though and its in my head. Any one have any ideas?