Is this normal at 20 weeks and 2 days?

Hannah

Since 18 weeks I have felt baby moving a lot. However, ever since yesterday I’ve not felt the baby moving that much at all. Maybe a kick or two after I eat something and that’s it. I checked the heartbeat on the Doppler and it was normal. I heard him move a couple times on the Doppler as well. Doctor said that a section of my cord is straight and not coiled as well as the umbilical cord to the side a little bit so they are going to give me an ultrasound at 24 weeks and 28 to make sure baby is still growing on track. I’ve heard that you shouldn’t count kicks until 28 weeks so I’m trying not to freak out. Has this happened to anyone else?