F2F medical for PIP, Bipolar with PTSD

Hello, I have Bipolar Disorder type II with Complex PTSD. I was awarded PIP in 2014 whilst still undiagnosed. I have completed the how your disability affects you form. On Monday evening I received a phone call from Atos asking to arrange the F2F medical. The first appointment they offered was at 9 am the next morning! They got a polite no thankyou, then they offered 9am Friday morning, I explained that because of the medication I take, early mornings are not suitable appointment times for me. We agreed to a 3pm appointment this Saturday.

The last F2F assessment I had went really well. The assessor was somebody who had a detailed knowledge of mental illness and this was reflected in her report.

My symptoms have become more pronounced since that last F2F, additionally I am awaiting surgery to remove my gall bladder and repair a hernia.

I become very anxious and hyper vigilant when outside of my home, when trying to speak I can stammer and lose my voice, if very stressed and unable to find a safe place, I have wet myself in the past.

I am worried about losing my voice during the assessment, and if I feel threatened wetting myself. How do I let the assessor know these issues? Do I even let them know? What happens if I lose my voice during the assessment, will it continue? What happens if I wet myself, will it continue? At what point will the amount of distress I am experiencing stop the assessment?

Fiona.