I was given vitamin d2 50, 000 units, 1.25 mg to take weekly. i took 2 in 4 days by accident. what will happen?

Nothing,but change D: This is not harmful- you would need to take it daily for weeks to become toxic. But i advise you stop d2 & change to d3 (available at health food stores) 5000 units/day & tell your doctor, because recent research suggests that whereas vit d3 is very helpful, d2 may be quite dangerous! see http://articles.Mercola.Com/sites/articles/archive/2011/11/30/taking-the-right-type-of-vitamin-d.Aspx.