Megan33 - CONGRATS on 70lbs lost; that is so great! You should be very proud of yourself!
I think it's very normal to feel "thin" when we start and continue to lose weight. I'm sure we've all experienced losing weight and picking up some item comparable to the weight gone and feel how much heavier it seems. For example, losing 10 lbs and then you pick up a bag of sugar weighing 10lbs and feeling how different it feels w/o the extra weight. That "extra" 10lbs makes a huge difference on our body frame and what we had to carry around with us beforehand. No wonder we feel "thin" when we lose weight; even when it's just 5 lbs. What an awesome feeling! Keep it up peeps