I'm 25 weeks tomorrow, and I've felt movement for almost 8 weeks now (of course intensified as baby grew more). My cousin is 21 weeks and she still hasn't felt movement and her doc said it was ok bc everything looked good on ultrasound! I wouldn't worry, your baby's kicks may just come later! :) but if worries you definitely would ask a doctor for piece of mind!
Hi, I'm 23 weeks pregnant with a boy and I also don't feel much movement, but rather more like flutters. Have you asked your doctor If that's normal?