baby movements

I'm just over 23 weeks and normally my baby is very active can feel her pretty much all day but last few days she seems to have slowed down a bit, she still kicks through the day but not as much as she was and it's really worrying me! Today I've had light period type cramps and also a sore throat feels like I'm coming down with a cold but it's really worrying me is it normal for the baby to not be as active some days?