Jonah, Where did you get the idea that 7,000 iu is a low dose? I've read a lot of books on the topic of supplements.
You do NOT want to see calcium coming out of your bones to balance the overly acidic pH in your blood stream, but that is another topic.
Here is Dr Atkins...on excess D3 taken...."Knowing that D3 increases the amount of calcium in the blood, it's logical to expect that too much D3 leads to an excess concentration of calcium. Should that occur, the mineral may seep into the walls of our blood vessels and other soft tissues, which could speed the formation of artery-blocking plaque". 106, "Dr Atkins' Vita-Nutrient Solution: Nature's Answer to Drugs" which is like a compendium of most supplements that are usually considered.
He suggests around 800 iu and more if you are inside a lot. But supplement doses also depend on body mass.
When I had a level of 58, I was taking 400 iu daily, but now I take 1,000 iu D3. Remember that fat soluble vitamins have to be taken within safe ranges. You don't have to test every single time you get blood tests.
All fat soluble vitamins should be taken within conservative levels because they can build up. I use several reference books to decide on dosages.
Please remember the the "normal range" is NOT the ideal range. It is the 95% range of all tests done at that particular lab and when it says 10-75, that refers to all the people within 95% of those taking the test. You are definitely now too high, so back off a bit and probably only take 400 iu daily for a long time until your level comes down to an ideal range.
I take 1,000iu daily. My level of 58 was when I was taking 400iu.
Please do not be angry about vitD because of your experience. I would never suggest such a huge amount to anyone. I can see a doctor suggesting it for ONE week to build up a very low level, but endocrinologists know very little about suppplements. Instead get a book on supplements written by a naturopath and probably one who is writing for diabetics, so it focuses on your area of concern.