Loosing inches but not weight !

Vi

Hi mommies

I am a FTM. My pre pregnancy weight was 144. I am now 12 weeks pp and I am

Breastfeeding. My weight is now 159 pounds. Although I’m 15 pounds away from my ideal weight I’m able to fit into my pre pregnancy dresses. I seem to be loosing inches but my weight won’t budge how much ever exercise I do. This really seems weird to me. Has anyone experienced this ? Is this normal ?