I got bigger at 36 weeks , But a lot of women don't get to big in there pregnancy.so don't worry if your doctor hasn't said nothing bad. If you feel there any problems just ask your doctor questions.

If the doctor hasn't said anything, just embrace it! The less you stretch, the less you have to worry about stretch marks! Remember, there are some women who never know they are pregnant and have perfectly healthy babies. Your doctor would have voiced concern by now if there was a problem. 

Everyone carries differently! 

Oh itl pop up until late 32 weeks I had nothing now I'm poping everyday at 35 weeks 😊 I've even opted out of maternity pics as its s just not much to photo however I still get the same struggles which suprised me lol bending over walking etc baby could be just hiding in your back more at this stage

I think you look so cute and perfect for your small frame! 

If you're worried talk to your doctor about it. Everyone carries different. If you were already small before getting pregnant, you usually don't get as big. As long as you're eating what you feel you need and staying hydrated, there should be no issues.Being pregnant and having a baby, you'll learn everybody around you will have an opinion on what you should/shouldn't look like or do. Just remember in the end there's only 2- 3 opinions that matter..you, the daddy, and your doctor.