My cat is in heat, howling, and rolling. How can I calm her down?

Unfortunately there is nothing specific to do to comfort her - she will show behavior changes until she is out of heat, and cats will cycle in and out of heat until they are bred. You could try something like a Feliway diffuser or other pheromone spray that might help her relax. Otherwise you should go ahead and try to schedule the spay surgery - ask your vet when they would feel most comfortable proceeding with surgery since she is currently in heat. Keep in mind that since hormones can persist for a period of time after surgery she may still show symptoms of a heat cycle for awhile.

These likely won't help much with the behaviors of a cat in heat, as these calming tablets work on animals with anxiety. Certainly you can try it, but because these behaviors are hormonally driven, the only way to stop these behaviors is to remove the source of the hormones: the uterus and ovaries. I would have Jolly spayed as soon as possible if you don't want to deal with her behaviors during heat.

4 months of age is very young for a cat to be in heat but she certainly could be, especially since she is a Siamese. If you have any concern that there could be another reason for her behavior than have your vet take a look at her. If she is in heat than it will last on average about 7 days and she may go back into heat 1-3 weeks later. She is old enough to be spayed so talk to your vet about the best time to have her spayed. There really isn't much you can do to help her, just make sure she doesn't get outside or around any male cats.

Unfortunately nothing can be done to ease symptoms of heat in cats, it is often very dramatic and can happen dozens of times a year. the only thing that can stop these symptoms is to have her spayed which is why most owners chose to have it done right after the first heat cycle.

I would not give her any type of NSAIDs (ibuprofen, naproxen, etc) as these are highly toxic to cats. I would just try some Benadryl twice a day to see if this helps. See link below. You could also try to use a feliway diffusers and spray to help calm her. Feliway is a cat pheromone that works on some cats to help calm them. I hope this helps! https://www.petcoach.co/canigive/cat/benadryl/

The only way to end her heat cycle is to either have her spayed or to let her meet a boy, Unfortunately queens will stay in heat until they get covered by a tomcat, as they are triggered ovulators. There are no medications which will stop her heat. Best have Snowy spayed if you do not intend to breed her.

It is quite likely she is in heat, especially if she is also calling or shouting loudly. If you do not want kittens, be sure to keep her indoors and isolated from any unneutered male cats until you can have her spayed