hip pain, baby dropping 29 weeks

i want to ask all the second time pregnant moms, im a ftm and almost 29 weeks pregnant. ob said baby measures 2 weeks bigger than she should be. the past 2 week i have been having some braxton hicks if i get to busy on my feet, not lasting more than 1min every 3-5min for about 30min, dragging me to the ground in pain, then it disappears. past week i realized that i dont have much pressure on my lungs any more, and breath much easier and been having alot of hip pain on my right side. im constantly walking with a limp. she was breeched, but i felt her do a sumersault in my belly one day and everything changed since. could it be that the ob got my due date wrong that im further along?