Without the values, hard to comment. To be clear, vitamin D is hydroxylated into a hormone, the actual pill you take is not hormonally active. Yes vitamin D is related to calcium in that total blood calcium is tightly regulated by the parathyroid glands; as calcium drops, there glands produce parathyroid hormone, causing the kidneys to turn the storage form of vitamin D, calcifediol, or 25(OH)D into the active form, 1,25(OH)2D3 resulting in absorption of calcium from both bone and diet. As you increase your vitamin D level, parathyroid hormone will start to lower and calcium may start to elevate however this wouldn’t usually happen until above 200ng/ml. There are conditions that your doctor may preclude such as kidney disease, again - without lab values, hard to say suffice to say it’s a big deal if your calcium is outside of safe reference range; either low or high.