I just got my betta fish, Bella, this Tuesday. This afternoon (about 12:00) she was acting really strange. She was sitting at the bottom of her tank when she started flipping over and white stuff spewed from beneath her. This happened once, she was okay for a few minutes, and then it happened again. I waited a few minutes and she seemed fine, so I left home and haven't been here for awhile. I'm home now and now she has these strange cream-colored stripes up her sides :-( I'm really worried about her. What could it be, and will she be okay?