I’m having a very similar set of issues/experience -it’s frustratng! Here’s what I’ve been told (both before starting Bikram and now, 5 months of dedicated practice in): for pear-shaped women, it takes a long-term commitment to lose weight/tone the rear, hips, thighs. When we lose weight, our bodies draw from the upper region (not where our concern generally lies) until there is absolutely NOTHING left to lose. Only when we have reached that point where our bodies have taken all they can from the upper half, will weightloss move downward. It’s the opposite struggle for the apple-shaped woman, though apparently, it is harder to lose lower body fat than any other kind. So keep doing what you’re doing! 🙂