How many carbs are you allowed a day?

My doctor gives a limit of 45-60 g a day, but I have to be honest, I don't actively think about carbs.  I focus on my protein, and I get over 100g most days.  My carbs are also usually under this anyway.  When I double-checked my stats in MyFitnessPal, yesterday I had 114g of protein, 37g carbs, and 1,037 calories.

Wow thanks everyone for the responses. My protein he wants me at 99g a day! I agree not all carbs are treated the same. It is hard trying to get these last 40 lbs off and watching carbs, protein, sugar and trying to make it all mesh together. I am thinking of going to his NUT again and sitting down with my menu for a two week time period so maybe he can guide me.

Thanks for your help!