Did my hips get wider?! Or am i just fat?

Lol! True story... when I was pregnant...I'd say 30weeks and on (ish) I bought some new underwear. They fit perfectly! Now, I'm 9weeks postpartum and I've lost all but 7 pounds of the baby weight I put on and the same underwear are sooooo uncomfortable!! They feel tight around my thighs and hips! Is it because my hips widened during childbirth??? I swear it's gotta be. My husband said it's probably just fat (no worries, he said it in a loving way lol) what do you guys think??