When Should I Feel My Baby Moving?
In general not feeling your baby move or move consistently before 24 weeks is never a concern. The baby is very small and can get into positions where you can't feel it well, even if you were feeling it well previously.
As the pregnancy progresses you should feel the baby move at least 10 times in a given hour or two at least 2 different times in a 24 hour period.
Many times as you get towards the very end of pregnancy the baby's movements are not as dramatic or as frequent as the baby has less room to move and is starting to learn how to sleep for longer periods of time.