Am I too small?

B • Twin mama Est. 2/20/16

I reached 33 weeks today, and hubby casually said "I thought you'd be bigger than this."

My last growth scan (28 weeks) they were 3lb each. The tech made mention of them being a little bit small. I'm 4"11 and have no room left in my torso for babies.

I'm really worried that they aren't growing properly because I'm too small for them to grow at the right pace. Anyone else have these worries?