Dry mouth and Vitamin D?

Hello!  I haven't been here for a while, so a quick background - 46 years old, had ovary removed last year, 20+ years with Crohn's disease, peri symptoms/issues for 3 years.  I had a gyn exam in April with urinalysis (but not bloodwork) and all was normal.  In May, I had my GI/Crohn's follow-up exam; the doctor ordered bloodwork and results showed a Vitamin D deficiency.  The doctor said this happens in a lot of Crohn's patients and told me to supplement with 2,000 IU daily.  After I'd been on the supplement for a while, I felt like I had more energy overall.  

Around this same time, I stopped taking dicyclomine, which my GI doctor had prescribed for intestinal spasms.  Dry mouth is listed as a side effect for dicyclomine, but I have never had that side effect in all the years I've taken it.  However, I had to start taking it again a few weeks ago when the spasms recurred.  Within a few days of starting it, I started noticing that my mouth was drier than usual - not parched, but drier.  I drink lots of water daily, so I knew something was wrong.

I stopped taking the dicyclomine since I knew it could cause dry mouth.  My mouth was less dry but still drier than usual.  I became very scared that something serious could be wrong with me since dry mouth can signal serious problems.  Then, I read today that after taking Vitamin D for a while, the body can be getting more than it needs and dry mouth can be a symptom of that.  The tip of my tongue is red and slightly irritated/burning and I also saw this listed on a site about having too much Vitamin D in the body.

I am scheduling an appointment to have my Vitamin D checked again.  The GI doctor did not order a follow-up visit to check it, but I am going anyway to see if this is the problem or not.  It seems odd that the dicyclomine would suddenly cause dry mouth when it has never done that before, and taking the Vitamin D is really the only major change I've made.  I read that it doesn't take a high dose to produce these side effects, that it can build up over time and start causing problems, and I do also eat enriched foods and go out for walks in the sun.  The initial burst of energy that I felt after I started on the supplement is long gone, and I'm back to being just as tired, depressed, and anxious as I was before.  I am freaking out with worry that something serious is wrong - AGAIN - as it seems that's all I do since starting peri.  Please help.

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