Why is my baby so big???

I have always been petite (I was like 115 when I got pregnant and now I’m 40 weeks (due today) and I’m up to 167 lbs!!!! So I’ve gained a lot of weight. :( my baby girl is measuring over 8lbs already!!!!!! Is she going to end up being obese or something? Like, that just seems so big. And they said they could be off a pound, give or take 😣😖😩🤯

For everyone saying that’s average.. it’s not lol.

Reason why I’m worried is because they said she could be over that right now and if she doesn’t come on her own I have to wait a week to be induced and she will just be gaining more weight..