I have noticed all through pregnancy that there would be less movement from the baby on days i had been busy or exercised (by exercise only really walking), i thought it could be that the me being more active was rocking him to sleep, or (unscientifically) that I'd tired him out. He always went back to normal the next day, so didn't worry too much.
I read in my pregnancy book today, however, that if movement regularly reduces after exercise, you should ask the midwife for advice.
I am now 35+1. Has anyone else had this, and did you ask for advice? x