I have just been here in the U.S. for 7 months and have been working for 7 months now. I am the primary account holder on a bank joint account with my husband we opened 5 months ago. I also have a "credit builder" VISA credit card which I also got 5 months ago from the same bank. I have no debts, whatsoever. I always pay my credit card in full every month. The problem is my credit score is still zero. What should I do?