Moreover, if there's anything you think the doctor needs to know then tell him or her. If you're taking any herbs or supplements, or medicines purchased from the pharmacist then say so. Doctors are human too, not mind readers, there may be causes of your illness they have not yet considered, or questions they have just forgotten to ask you. In everyday life it can be easy to misunderstand something and completely get the wrong end of the stick. In medicine it can be frighteningly easy.
Doctors talk in technical language.
Three-letter acronyms are in abundance, and words that mean one thing to a patient mean something totally different to their doctor. This is why it's important to spell things out and not to be embarrassed to ask if you don't understand. Nobody will think you're stupid. It makes everyone's life easier in the long run and avoids potential problems. Likewise, if your GP asks you what you mean by something, don't be upset, just tell them.