About small cat

this kitty found us here and has been hanging out in our complex and a couple of neighbors and I have fed her it became apparent she was pregnant.she would come running in the house ( I have 2 fixed male cats) eat all the food and drink water and want out .. last night she came in and she was not eating just resting and very aggressive to the other cats and clingy to me. I got her some blankets and tried to find a spot for her to be comfortable.. however she is making my cats so stressed out one of my cats ran out the door this morning and I had to go find him and home .. she is hissing and swatting at them when they come near and only wants me.my cats are running around trying to find a peaceful area in their home. I want to help her but can not keep her.

Seminole County
winter springs, Florida