I had my 20 week scan last week and i was told everything was looking normal and just as about to leave we were told the results of the size of the babys head. We were told the head was looking a little smaller than the average of 5th percentile, but it may just that the baby has a small head. We have to go back next week at the 22 week point to check for growth Has anyone else been through this - am i worrying for no reason, after having a mmc at start of year i am a little nervous.