Not having another Ultrasound...

Summer
I had my last ultrasound at 27 weeks bc she had fluid in her kidneys, but it was all gone at the ultrasound! Now I see everyone on here getting their last ultrasounds at like 33-36 weeks and finding out how big their baby is. When I was at 27 weeks they told me she was almost 3 lbs, now that im getting way bigger I want to know how big she is! I'm jealous of everyone else getting their ultrasounds this late in the pregnancy. The doctor said I don't get anymore. I could go somewhere else but tight on money right now. Anyone else in the same situation?