Mental health

I have been diagnosed with depression in the past so I know I have that. But I feel like I have something more than just depression going on, like I’ll get this thought in my head but it’s not like I thought it myself, it’s like someone told me it if that makes since. And I’ll end up believing it and nothing else.

Like I got this voice telling me that my BF is cheating on me and now I can’t shake this feeling that he is