Funny, it's the same for me, I cannot put male trousers anymore because of waist and hip issues, though I'm losing weight every week.
I still have to wear the same much too large man pants I used to wear 3 years ago to go to the office. I just look like a clown.
At home, at least I've got my female trousers which fit me perfectly (but I have to buy new ones every 3 months because of my diet, of course).
After my FFS, next year, I plan to progressively go to the office in female trousers and suit... and later of course, when people get used to it, normale female attire.