Helping the healing , broke fibia and tibia

I broke my fibia and tibia pretty badly on the 27th of may 2010, i had to have surgery a day later and now have 2 plates and 12 screws, problem is i went for my 6 week check with the ortho and he told me there was still no healing but not to worry this was pretty normal for the extent of the break, I am really worried about it, is there anything i can do to help my healing and is this normal???