The chemist had none for three weeks

I did exactly the same and felt terrible about it. You have not done anything wrong.

Practical, boring answer: write the three questions down before you go in. I have never once remembered them otherwise.

I am the person who had the frightening version of this. I went in, it was investigated, and it was not what anyone feared. Going in is the whole of my advice.

It got worse before it got better for me, which I wish someone had said. About ten days of worse.

Building on what the reply above wrote rather than answering the original question.

For what it is worth, the trial data on this is thinner than the confidence of the internet would suggest. Worth knowing when you read the posts.

the reply above said something I want to sit with for a second.

Have you got anyone who can be with you when you do it? It made an enormous difference to me and I felt silly asking.

Building on what the reply above wrote rather than answering the original question.

I have been in this circle a year and this question comes round every few months. It is not a silly question. It is the question.

Coming back to this a fortnight later to say it settled. Leaving the update because I hate reading threads that stop.