I know that pain way too well, but I don't think it is a foot- firstly becasue my baby is all lopsided and over on the right side at the momment, and I'm pretty sure the feet are under my right ribs. Plus, the baby has been doing loops and somersaults over the last couple of weeks, yet the pain is there nearly every night, and during the day too when I leant over computer too much. Also, the 1st time I mentioned it the a midwife, (about 30 weeks, or a little earlier?) she measured and said my uterus wasn't even up that high yet. My theory is a bit weird- but the only other woman I know who knew what I meant (before I figured out you guys knew all about it!) it another shorty bum like me. Have spoken to a few midwives/Dr's about it (mainly as only painful/annoying thing in an otherwise really comfortable pregnancy and I have to have something to tell them @ appointments!), and they are all a bit vague. The only answer that made sense was- I'm pretty short, I have very little waist height, and the baby has to go somewhere- hence pressure on ribs rather than actual baby bits. Doesn't explain why its almost always left though, rather than left and right!! mm that might blow my theory too!!It does help me to spend as much time with left arm raised as possible- kind of resting my hand on head in traffic etc..!