jac,
for me, i asked my gynae whether my bb is engaged then she touched my tummy then said engaged. I even ask her how come she knows, she said cant feel the head le. then she proceed with ultrascan. can see bb head quite down le.
when bb is engaged, the pelvic area quite painful one. last time i feel smething is dropping when standing. now engaged, smetimes, i sit or lie down, can feel painful one.