thank you for the help people...im such a worrier and i love my bella like a child!
i felt so sorry for her gasping for breath she calms down and she is fine, she has so much energy its unreal so i guess thats a plus....just makes me worry because ive read its an older dog issue and progresses but shes only young and so i think shes gonna die young

thanx for your help everyone i dont feel so alone anymore...definatly no more collars for her its the only time usually she has these attacks so....
thanx again people...bella says thank you too x