I received flu shot one month ago.I was also getting 50,000 units of vitamin d for 8 weeks .it ended two weeks ago.for last three weeks I have dull pain of right elbow.I am unable to lift anything with right hand.I have pain when writing or even flexing.I am right hand dominant.the flu shot was also given on right arm.could it be the flu shot or vitamin d deficiency.I have labs pending.oh,I have allergies to the sun. I get hives and swelling.I need prednidone when in sun more than give minutes.