Lightheadedness/ out of body feeling

Lately I've been feeling slightly out of it- literally. As in, I feel like I'm not fully inside of my body. And you know how when you stand up too quickly and you get a bit of a head rush? That's kind of how my head feels, except constantly- but it's just mild. It's kinda of hard to explain, but I feel like I'm not grounded or something, if that makes sense.

Earlier this year, I almost fainted, but got over it. But after that, it seems like I've been getting a lot of head rushes a lot more often, so I don't know if this and the "out of it" feelings are related.

Also, I've been using Nasonex nasal spray and I thought that this may have been causing these feelings because I didn't get these symptos until after usig it, so I didn't use it today. I'm not feeling as out of it, so is it possible that that the Nasonex could have caused this? I checked the side effects for it, but none of them matched my symptoms.

[Roger Gould, M.D.]

this experience you described is usually associated with an anxiety reaction beginning.  It is unlikely, but possible, that there's also a physical cause so you should consult your family doctor.