Hello everyone. I’m in need of some urgent help. I’ve had a vitamin D injection of ergocalciferol a few days ago. I’ve had it a number of times before and it’s been ok, but this time the reaction has been quite troublesome. I’ve got a headache, feeling light headed but what’s worrying me the most is that I’m not urinating as much and not emptying my pouch as often. My urge to go to the toilet is not like before too. Please anyones help with this will be greatly appreciated. Many thanks indeed.