What do I do?

I went to the doctors a while ago and explained my symptoms and stuff it was very awkward to talk about because they kept asking me to explain what my symptoms were so I was listing off daily symptoms and it was a lot then he just said that he’ll book a blood test but I probably have fibromyalgia then sent me off with a book and told me to exercise and just build up a pain tolerance, I’m just confused on what to do now? Is that it? I probably have it so that’s it? I know I just feel like this because it’s been bad the last few days but like is that really it?