Baby movements very low

I started to feel the baby move distictly around 18 weeks pregnant but as of 20 weeks the baby was kicking lots and real low in the abdomen. 22 weeks to 23 weeks the baby was still low and moving and kicking lots more. betwen 23 - 24weeks the baby was on strike alittle. The movements slowed down which got me worried and they were still low and giving me grief. She was kicking my bladder, cervix and I was totally having issues sleeping.