Girls, hi everyone! My daughter has been acting up for four days now, …

Girls, hi everyone! My daughter has been acting up for four days now, lying around on her belly, not moving at all. She used to be like that around her own axis and even crawled on all fours before. But for the past four days she's just not herself. She's constantly crying, wanting to sleep, and needs constant attention. She cries while sleeping and even cries when she wakes up. Has anyone experienced this?