I seem to remember being anxious about the 20 week scan because it had been 10 weeks since the previous scan for us. I was feeling some kicks and fluttering but not every day and when they had a quiet day I would worry. BUT the scan was wonderful! Got the most amazing pics from it and the sonographer spent ages explaining what was what and showing us that all was ok. All scans are a bit nerve wracking, but the elation afterwards is wonderful. Go for the scan, relax and enjoy seeing your little man bumbling about in your tummy.