Decreased movement?

Luna • Baby Elle arrived 9/16/15 😍
Im 20w1d (FTM) and  have been feeling my girl since 16 weeks and especially strong since 18wks. Today she has been very quiet, just a few little movements as opposed to her usual active self. I've even tried my tricks of drinking something sweet and laying down.  Should I be concerned and call my Dr? Or is she just having a quiet day?