omg!! my cat won't stop meowing day and night... help!!?

Is she spayed? Otherwise talk to your Vet.

Maybe your cat in heat. If it is she and she lying and crawling in ground ,or if she takes her bottom upward it means she is in heat. This period is the time that cats wants to mate. if it is male and he pee on unusual place he must be in heat

your cat maybe sick too, so if she or he does not eat anything it means he or she has problem and you should take it to veterinary as soon as possible

Check her food and make sure she has some, clean her litter box, and if that doesn't work, take a spray bottle and spray her, cats usually don't like that, so it will make them stop meowing.

She is proubly in heat or she could be in pain take her to the vet or keep an eye on her

My cat used to do that a lot. But when we got a second cat he stopped it. It gave him another cat to play with.

She might be going into heat so if she isnt spayed bolt the windows and lock the doors. She's calling for a lover.

I'm pretty sure she's in heat. My cat does this a lot. You should get her fixed. :)

If she's not spayed, she's probably in heat. Time to go to vet.

sounds like she is in heat if she is not much you can do but let time pass or she mates

Since your not giving any other information, based on what you've described my immediate thought is that your cat isn't fixed and has now gone into heat. Get her fixed. Duh.