It is around 10 kicks a day, but when you have an anterior placenta, bub will probably be moving non-stop and you will hardly feel it. I only started getting noticable kicks at 26 weeks, before that, nothing. I'd go for a check up and the midwife would comment on how active bub was, but I couldn't feel a thing. You'll notice in the next couple of weeks that you can feel kicks more noticably as bub gets bigger and stronger. I wouldn't be worrying too much at this stage though.