Looks like I’ve lost weight, but haven’t?

During my pregnancy I gained quite a bit of weight. I started out around 112 and don’t know exactly what I weighed at the end, but I think I was somewhere around 147.

I’m now 6 weeks pp and i am EBF. I’ve not really been dieting or exercising apart from dealing with my newborn and 19 month old every day, and my weight seems stuck around 134-137, yet I feel like despite the number on the scale not really going down I am looking like I am still losing weight?