nope, your foot was being observed by your leg to which it is attached, your brain to which all the nerves are attached, and abstractly via your brain's sense of spatial awareness. ;)

that's the thing about quantum physics; you have to understand that due to gravitons, everything in the universe is always being observed by at least them, at all times. this is the whole reason shröedinger's cat experiment can never be attempted: no box could be constructed that could isolate the cat from gravitons, since they pass through matter and are, in fact, emitted by anything with mass, such as the box itself.

the whole concept of observation is a highly contextual abstract that more describes the mechanism of quantum existence (i.e. superpositions), even though everything in our current perception of space-time exists because it is self-observing.