Bigbee don't worry, it's quite common with your first not to feel movement as much, I remember from 15-20 weeks with my first analysing everythingi felt for movement, I also had an anterior placenta, then when I could feel him move it was hit and miss until later on. I used to havea cold drink and lie down just to feel him move, he was a very lazy baby! You might find over the next couple of weeks, babies kicks startto feel stronger. I know this time baby a is tucked behind my placenta and in the last couple of weeks she's started giving me hard kicks but still can't feel her from the outside xxx