Short. Term memory problems

I'm. In my second month of treatment with harvoni and I cannot remember what i did yesterday or day before. I have sseveral diagnosis esses...ADD, diabetes type 2 and h ep c. Ive never been great with time concepts but im wondering if this is part of "brain fog" ?
From hep c...or maybe Alzheimers? Im 65 and have been treated for clinical depression a long tume. But now i found out that could be from hep c. Any thoughts?