Is mood swings part of anxiety? Or could it be bi polar depression? I ask because on Friday night I seemed fine, then quickly after just one discussion on the phone my mood changed (as I started worrying about flying) I just spiralled into despair. yesterday I felt really worried still but I think this was due to crying so much on Friday night & not getting asleep until 3am. However, later on in the evening my mood just seemed to improve really quickly & I felt so much better & positive. This morning I still felt okay. I felt in a great mood infact - felt really positive - then later on this afternoon I started to feel anxiety again - started letting negative thoughts creep in again. I'm like this quite alot - some days I seem to swing from negative to positive in the blink of an eye. Is this just part of PD & anxiety? Does anyone else ever feel like this?