Sounds like it to me...
I went through a period of about a week when I had pain on the underside of my left foot (kind of along the ligament for the big toe, but on the bottom of my foot) whenever I got up from a sitting position. Although all my problems were originally left-sided, I never had a problem with the left nerve in this position before. Always when standing and walking, never with a particular movement. At that time I thought it funny, right back pain while sitting and left sciatic pain getting up... but these days the right sciatic nerve is my arch enemy
Anyhow, it seemed to signal for me the start of a new chapter in my spine saga...
I haven't had it since on the underside of the foot, and maybe the nerve was just flaring up a muscle thing or something (i.e not strictly the sciatic nerve per se)...but I've come to realise these things are all related...its why for example a loss of muscle strength in a particular toe is an indicator of nerve irritation at a particular level. Remember the walking on tip-toes, walking on heels test??? Thinking about it, they always do that test where they run something up underneath your foot too...think it tests a reflex reaction.
Anyhow, I would certainly mention it next time you see someone...all extra info for them, even if you never get it again, and if it gets too much maybe give your doc a call for some advice.
Enjoy your weekend