I only feel my baby's movements down really low… does that mean he's breech?

I am 26.5 weeks and have an anterior placenta so I have only been feeling kicks & movements since week 21-22. However, I have only ever felt them down really low, in my bladder, cervix, and lower abdomen. I haven't ever felt anything at or above my belly button… I know that some people carry "lower" than others, so that's probably the case, but does this also sound like my son is breech? I know that if he IS, he has plenty of weeks to change positions, but if he hasn't by now, why would he later?

At what week would the doctor start to be concerned with his position and how exactly would he know if he was breech or not?
Thanks Ashley M, but um… my baby is WAY bigger than 2 or 3 inches, and I do feel regular movement… so I'm not really sure what you're talking about..