Your cat is still suffering from "Separation anxiety". You have adopted this cat recently so it will take time to adjust in new environment. To create attraction in cat for your house, put some delicious food at the door.
Don't let it roam around in cold. It will make it sick. Bring another cat for it to make its feel like home.
Don't let it roam around in cold. It will make it sick. Bring another cat for it to make its feel like home.