I live in a small apartment where no pets are aloud. Recently a small stray cat came to my door and was crying it was horrible). I have been feeding her for 2 weeks and letting her in to warm up. Well, I fell in love and made an appointment to bring her to a vet for checkup and shots. Her overall health was good. But he mentioned she had worms. I saw white back there and thought it was something but I have never had a cat. He gave me medicine and I brought her home and gave it to her. (very tramatic day) This morning I woke up and she went to the bathroom all over the apartment. She is acting really strange and jumping around. I noticed there is something hanging from "back there" She is not the same cat I fell in love with but maybe this is painful? I don't know. I wanted to keep her as an inside cat but when I open the door she attempts to run out. Between the vet, food, cat transporter, litter box and toys, I have spent over $200.00 in 2 days. I really want to keep her but she is whinning really loud to go out and I swear she hates me. She was very loveable but now she won't come near me. Are worms painful? How long will it last before they are gone? Will she snap out of this wanting to run out the door? Please HELP!