Have had anxiety for years now, body constantly tense, racing heart. I think my body has got used to being like this as no stressors in my life now. I got bloods done recently and showed Vitamin D levels are extremely low so I was prescribed 50000 iu a week for 8 weeks and doc said this might help with anxiety. I've only one week left and absolutely no improvement in anxiety. I feel I need something to help me now as I'm starting to feel a bit down also and it's affecting my quality of life. Is it reasonable to return to doc?