I would suggest that you see a doctor that actually not only understands where to have the testing done, but knows how to read the tests and evaluated you properly - and treat you properly - for these infections - a LLMD.
If you would send me an email, with the area you live in, I have some UK LLMD's listed that I could share with you. To send me an email, you can click on the blue envelop under my name, or click on my screen name to get my email.
As long as we can understand each other is what's most important!! We may have to ask a lot of questions, but if you don't mind - neither do we.