my kitty dosnt seem herself today:(, well more like since around 3:30. she has been sleeping soundly and when im in her face when shes laying around she usually will get up and move about. she also follows me around the house no matter how soundly shes sleeping and shes been on the couch for a few hours and i haven't been:( im going to give her until tomorrow afternoon and then ill call the vet ( i want to give her time in case its nothing as im one to jump the gun and spend a couple hundred at the vet to find nothing wrong w/ my animals). she had ate earlier, and i know she used the litter box. what could it be?

Pic related, its Athena