I fully understand this. It was the same for me. When i discharged myself from rehab 4½ years ago I was the heaviest I had ever been and I couldn't get medical professionals to take me seriously (with the odd exception here and there). When I started to lose weight, their attitudes especially to the chronic pain completely changed. I've lost 24½kg since then (from my last known maxiumum weight - I refused to be weighed after a certain point). I'm down to 62½kg now and even when I was in the 70s kg range the change in people's attitudes has not ceased to amaze me.
I know I'm still carrying a lot more fat that I used to at this weight though because I'm still at least 2 sizes bigger than I was. I carry the weight around my internal organs (like a man). I've no natural padding on my backside, so I spend my life pulling clothing up! I still need to drop about 7kg to get the dangerous fat off my internal organs. I'll get there eventually. For now my aim is 60kg, so another 2½kg before my operation at the end of the month.
It was great at the weekend though when hubby turned around and put a whole load of my clothes into recycling (I've had to flea bomb the house and wash absolutely everything due to some insect issues relating to the previous tenant and a very wet winter & spring. I've been cleaning, he's been on sorting and putting away.) He found a T-shirt that was 3XL in size and decided I didn't need it anymore! I'm right at the border of Medium to Small at the moment!