Very confused...what are these thoughts?

We may be having delusions but are very confused about something. We cant tell if we truly believe these things are happening (like a delusion) or if we are afraid they may happen (like a phobia or possibly paranoia.) A lot of them are also very depersonalized thoughts and we do suffer from dissociation so that could very well explain it. Some of these thoughts include: we've been abducted by aliens, we are an alien, or we are a robot. Some that are more phobiac are that if you touch our belly button your hand will enter our stomach. Sometimes its almost like we can /feel/ it. The one that seems more like paranoia is that whenever we go up flights of stairs it feels like someone is always behind us. I think these thoughts fluctuate. One minute we're just afraid they may happen, like a phobia, but other times I think she truly believes it happened/is currently happening...would that make these thoughts delusions? (note: We've been told by doctors we have some sort of psychotic disorder but they arent sure what exactly.)
-kaleb