Hi Kyda,
There is no reason to afraid of your situation, you are perfectly fine, because you did
Nikah according to your faith(Muslim). USCIS also know that. The best thing you can do to
make this process more true that you can make a trip to Pakistan and then make lot of
pictures with your husband, you don't need to take off your scarf or Hijaab, just make sure
your full face is showing up. Take pictures with both of your husband and your family.
You can also explain in a paper how your marriage took place to the USCIS so that they
understand the situation.