Has anyone else had this happen???

I am pregnant with di/di twin girls. At my 20 week anatomy scan he couldn't get a good picture of baby Bs heart so he brought me
Back at 22 weeks. Well at that ultrasound we still couldn't get a great picture of his liking at that appt either. So he decided he's sending me to a high risk doctor for them to take a look at the heart. He also mentioned one baby having more fluid than the other and wanted the high risk Doctor to check that out as well. But he said both fluid levels were normal. So in my opinion I'm confused as to why the fluid would matter if both levels were normal. Anyone else have anything similar to this happen and what was the out comes??? Also, I only feel movement on my right side never in the left side is this normal?? I'm 24 weeks pregnant tmw!