Not silly. There are quite a few physical maladies that can cause BP-like symptoms. Those should be ruled out before psychological diagnoses are made, but often they aren't. There have been a number of people on PC over the years that came to find out that they had something else causing their symptoms. Hey, why would you NOT wish for that?! Chances are it'd be easier to treat for starters(!)

It's not really false hope. Especially if physical causes were not ruled out prior to your dx, it's reasonable to have hope. I can't remember exactly your situation, but if your symptoms are ongoing (ie. haven't presented them themselves in cycles of depression and markedly increased energy etc over spans of time) it may be. If such distinctive telling markers [i]have[/] been present, you might want to dial down the hope. Diagnoses are all about evidence.

It might be about difficulties of acceptance -- I do remember that you were only recently diagnosed and that is a very common reaction. But it might not be. Acceptance can certainly be influenced by evidence -- the more there is, the harder it is to deny.

Long/short -- go ahead and hope -- ideally at a level that considers how well the BP dx fit before this information came into play. Try not to fixate (haha, I know) and just see how it plays out.

Oh! On your initial post you said you asked if the vitamin D would eliminate the BP. If it's really BP, no, sorry, it wouldn't. If only it were that easy…. sigh. BUT! You've had symptoms, and if your vitamin D is that low, getting it to the right level it may well help ease symptoms whether it's BP or not. So there's that.