Be really, really careful with pregnancy books as many still contain the whole 10 movements a day is normal, and movement slows down at the end of pregnancy. That theory is now outdated and very, very wrong, so please always remember that if your baby's movement changes (either increases or decreases), always get checked at your maternity assessment unit. Every mother feels like they're wasting mw time but you never, ever are, it's always so much better to get baby's hb and movement checked at the unit. Never use a home doppler as a substitute for mw checks with a change in movement, always go in.
Have a look at Kicks Count on Facebook and google, tons of really good info on what to expect with baby's movement.
Congratulations on reaching the hb milestone!