yeah more than likely, prepare for many nights of broken sleep. i was in the same position with my first cat (didn't know anything about it) last year. she will probably be frisky and noisy for about 2 weeks, then she may calm down for a few days, then it'll start up again. when she seems likes she calmed down a bit, get her booked into the vets to get spayed. they won't (or usually don't) spay cats on heat because... i don't know why... its too tricky inside or something. haha, very technical. don't worry though, just get her booked in soon so you can get some sleep. xx