do i have unrealistic expectations?

photos #1 is right before i got pregnant (currently 9 months pregnant) and photo #2 is about 3.5 years ago) i'm definitely wanting to lose weight after i have my daughter, currently at 221lbs..just wondering if the 2nd photo is unrealistic after having a baby and it being 3 years ago (i think i was 17 ish..maybe closer to 18) i know bodies change a lot after pregnancies and don't wanna get my hopes up and be discouraged...thoughts? 😅😩 i just wanna be confident again and love my body like i did in the 2nd photo