I took out a loan to pay IVF fertility treatments. I am currently making payments to USAA. Do I claim full payment made to the dr via check, or just what I paid to USAA?

I'm making payments to pay off the loan, but the loan was deposited to my bank account and I paid the docs office by a personal check.  So do I only count what I've actually paid for or for the full amount of the loan, as I did pay the doctors office that amount.