Caltrate and vitamin D

       I take a One-A-Day womens 50+ vitamin which has 800 IU of vitamin D in it.  I have taken 2 Caltrate 600 calcium supplement pills for years without the vitamin D because of the other D I have been getting with the multi vitamin and food. Now I can`t find calcium without the D in it.  So if I take 2 Caltrates a day plus my regular vitamin is this to much D for the calcium to absorb?  Thank you