The situation is as follows: I was waiting for my friend Kate to visit me. It was time for her to come but she still didn't show up. When I called her, she replied that she had a meeting right at that moment. Then she asked me, "Did you forget about it?" I realized that I completely forgot about it. And I wanted to answer in a kind of sarcastic funny way. So I said, "If I did (remembered), I wouldn't have called you NOW".
Was my reply grammatically correct? Or I should have said, "If I had remembered, I wouldn't have called you now" instead? If both sentences are not correct, what would be a better way to reply?