Gabe's Incredible Memory

We're going to visit Gammy and Gampa today.  We haven't seen them since before Christmas, as Gam's been sick.  Gabe knew that Gammy and Gampa missed the family Christmas gathering because Gam wasn't feeling well; and we talked to her on the phone around that time.  But, we haven't talked about it since then, really.  This morning, I told Gabe that we were going to see Gammy and Gampa today, and he said, "Is Gammy feeling better?  Did she go to the doctor?"  I just couldn't believe that he remembered.  Am I just an overly proud mom, or is his memory (at age 3.5) incredible??