Calcium supplement needed.. Help :)

Hi!! So....  Currently in my 1st <a href="">ivf</a> cycle and want to make sure im taking all the supplements i need.  I have been on rainbow light organics prenatal while TTC, this prenatal vitamin does not contain any calcium and i have been trying to find a good whole food based calcium supplement thats safe for pregnancy.. Any suggestions?? I have been searching the web for weeks now :/  
Also, does anyone know how much is too much for vitamin D??