Hi, everyone I have just had a frantic phone call from my sister who has just travelled back to Melbourne on three flights from Dublin then got delayed by fog and had to stay on the plane at another airport for 5 hours. She is now about to get on another plane to the Gold Coast and is experiencing pain in her upper arm. She is worried it is a DVT but I have never heard of it in your arm, does anybody know if she should be worried or not?