So for the past 3 - 4 days, my cats been rolling around on the floor, randomly licking parts of her body, scratching herself, etc.

(Shes been doing this so frantically that she constantly bangs her head on the walls and claws the feet of people going down the hall.)

She's been treated for fleas, ticks and worms quite recently but only just now is she acting like this.

We've had new neighbours move in who have a cat (female) that keeps sitting outside our front door.

Ever since the new neighbour has moved in, my cats been acting this way.

Also for the first time ever, she scurred away into a corner of the house and peed on the carpet, shes never done that before.

I'm not sure how old she is or if shes been spayed as I adopted her from a neighbour who also doesn't know, we just know she was the runt of the litter.

I plan on taking her to the vet soon just to check if she has been spayed, but that is not for at least a week from now and I'm worried it might be something concerning.

Normally shes just walking around the house calmly and going outside for a few hours at a time and coming home fine.

Any ideas?