Movement at 28 weeks

I’m officially 28 weeks today. The previous few days the baby was moving like crazy. There was no need to count kicks because she moved all day. However, starting last night I started to not feel her as much. I’ve felt her a few different times through the day today, but nothing as frequent and strong as the previous few days. I also feel like she’s moved down lower. The movements that I have felt have all been lower pubic area. I don’t know if my anterior placenta is contributing to this too or now. I’ve tried all the tips to get her moving too; relaxing in the tub, eating, drinking something cold, and laying on my side. Nothing seems to working to get her going. I’m starting to get really worried. My husband keeps telling me everything is okay she’s probably just sleeping, but I can’t help but start to worry.