losing so much weight bf

Hello Mommas! *long post, sorry*

So I have been breastfeeding my baby girl for 6 months now and plan to keep going. I have lost so much weight and I'm pretty sure it's from breastfeeding. It's awesome, but it's not awesome if you look like just skin and bones😔 (this post is probably making some of you roll your eyes) but I do NOT look healthy. I haven't weighed this little since I was in middle school. And I eat Breakfast, lunch, and dinner everyday! I do not pass if someone offers me a cake or doughnut! I still eat a lot! And always drinking Milk shakes and eating desserts! I just DONT GAIN WEIGHT!😣 and I'm tiring of people asking me if I eat or just always telling me how skinny I am. Help pls😔