My 7 years old female working cocker spaniel is in estrus season now. She had an ovarian spayed at 3 years old. The vet only kept 1 ovary ( right side). She shows discomfort in her lower back and psoas ( mild pain). Supersensitive and dislike to be touched. Extremely hungry and emotionally more fearful. Any suggestions on how to ease some of these symptoms when she is in heat?