CCH,

Thanks for the headzup you've started taking vitamin D3 and good question.

An increase in CH frequency is not uncommon for a few CH'ers after starting the anti-inflammatory regimen.  Roughly 5 to 8% of CH'ers have reported this phenomenon...  It's not clear why this is happening...

My guess is what little 25(OH)D and the active metabolite 1,25(OH)2D3 being produced by the first few doses of vitamin D3 are both being consumed very rapidly by other processes in the body like the immune system.  That somehow results in the increase of CH frequency.

Nearly all of the CH'ers who experienced an initial increase in the frequency of their CH, saw the CH frequency drop after a week to 10 days. Most of them were pain free shortly thereafter.  I also think your problem will go away once you start taking the complete anti-inflammatory regimen with at least 10,000 IU/day vitamin D3. 

Do consider the accelerated vitamin D3 dosing schedule when your supply of supplements arrive... 20,000 IU/day vitamin D3 for two weeks plus a 50,000 IU loading dose once a week for two weeks on top of the daily dose. 

At the beginning of the third week, stop the loading dose vitamin D3 and lower the daily vitamin D3 intake to 15,000 IU/day.  After two weeks taking 15,000 IU/day, lower the daily intake to a maintenance dose of 10,000 IU/day and try to get your 25(OH)D level tested.

For now double your present dose and try to find some additional magnesium.  400 mg/day should do the trick...

When your supply of anti-inflammatory supplements come in and you experience a favorable response to this regimen, be sure to put more supplements on order... You're going to want to stay on this regimen year-round for a long time...

Take care and please keep us posted.

V/R, Batch