Hello Poppy, welcome to the hut
I keep getting a candida overgrowth in my gut, and do sometimes get vaginal thrush too (sorry tmi!), although the two don't necessarily go together.
I know when its flared up again (usually because I am rubbish at eating the odd treat... one leads to another and another and another until I just gorge myself ). I usually get very very tired, sore throat, earache, headaches, muscles ache, bloating, constipation and/or diarrhoea, and when its really bad I also get very down, irregular periods, EVIL pmt.... the list just goes on.
Have a look at the National Candida Society's website (candida-society.org). They have quite a good checklist of symptons, as well as things that can set it off.
If you think you may have it, I'd suggest getting tested, although your doctor probably won't want to bother. I go to a lovely lady in Somerset who runs a company called Allergy Test UK - she does have testers around the country. Where are you based? If you have got it, you will probably have to cut out some foods and take some supplements to help repair the damage to your gut, but it shouldn't be forever and you can usually start re-introducing foods again slowly after 8 weeks. Unless you are like me - I am unable to do it slowly and end up with the same problems again and again.
Anyway, sorry for the long post, but I hope it is of use.