The Sontaran Experiment

You are momentarily disorientated when from waving goodbye to Vira on the Ark, you find bracken up your nose and in your mouth and all the blood rushing to your head. It takes you a minute or two to realise that you are upside down in a pile of bracken. You cry out, hoping that the Doctor and Harry are nearby and begin to attempt to right yourself.
Eventually Harry appears and helps you stand up. With just your pride wounded you follow him back to where he and the Doctor apparently arrived.