When did you get "big"?

Y
I'm petite 5'2", and now gained about 15 lbs sitting at 130.
I "popped" a little early on as soon as 11-12 weeks. But now at 15 weeks I feel like I'm the same size as before not getting any bigger. Just put on more weight 😑
This is my first pregnancy so I'm wondering is it normal to be the same size for a while?
Judging by the picture... Am I too small? Curiosity makes me a bit impatient for the next appointment. Sorry for all the questions!