Second pregnancy, same size baby?


So, my first son was born 9 lb 2 oz (he's now 20 months old!) and he was born naturally, at home at 39 weeks 5 days. I'm now pregnant again, I'm 39 weeks with another boy! I am curious if second time mom's can tell if their baby will be bigger or smaller than the first? And did you guess correctly?

I feel like this baby will be smaller than my first, just because I'm not as uncomfortable as I was with my first, lol. I guess I'll see soon enough!