Candida and body odor NEED HELP!

I have been suffering from Body Odor more than 3 years. I heard that candida in the body may cause bad B.O. Moreover,i always itch before sweating, chronic constipation,apthous ulcer and have Body Odor even after showering. So I would like to ask that

1. what is the sign or symptom for candida in the body(gut or blood)?

2. How can it be diagnosed?

THANKS FOR EVERY COMMENT