Do I have Candida?

Hello everyone,
I'm a 18 yr old male that has been suffering from Candida like symptoms for over 2 yrs. I used to have very bad diarrhea, as well as bloating and other stomach related problems. I went to the doctor's for this and had a variety of tests done including a colonoscopy and Upper and Lower GI tests. I even had a stool analysis which came out fine, so all they did was told me I had IBS and sent me home. I suffer with other symptoms such as Body Odor (affected me the most) even after I shower, headaches, nasal problems, foggy minded all the time, lack of energy, and even lactose intolerance. Let me also introduce the fact that all of these problems started after I took a Antibiotic called Minoncycline to treat acne. I was wondering if any out there has had similar problems as me and has gotten diagnosed with Candida. Also I'm very interested in taking the Lab test from GSDL and I was wondering if there is any way to take a test like this without a referral?