What is the oldest memory you have?

I remember being in my crib, so I was younger than 2. I think I was more toddler than baby at the time. I was lying on my side and I remember hearing my pulse (you know how if your ear buries into the pillow, you can hear that pulse?). I didn't know what the sound was so I started calling for my mom. She came in and comforted me and sang, "Tomorrow, Tomorrow" and I felt all better and went to sleep.

I also remember having my diaper changed in the hallway. The carpet was a reddish color (lovely early 80s brick red) and I was lying in between the two bedrooms at our old house. My mom laid me there and then came back and changed me. I had to be pretty young because we were all potty trained by 18-20 months.