babies have lazy days. but if you are worried go up and get checked i just went in a couple days ago for this same thing. my baby was ok. but i needed to put my mind at ease so i went in.
Have you felt the baby at all before hand?
Like she said sometimes babies aren't as active as they are other days but my midwife told me when I started feeling movement that if 24 hours goes by and he doesn't move at all to call them immediately.
- Jiggle your stomach , drink something cold or lay on your back pull up some baby lullabies and put the music to your stomach and see if it works.
I literally went through the same thing during my 22/23rd week, she was very inactive! Try drinking something cold along with what PeedieD said; you're lil babe is prob just relaxing :)