Going to the doctor

Hey guys i need some help. I am going to a new doctor on Tuesday. She apparently specializes in Colonscopy's but is not just a Gastrologist. The reason i am going is that i am in pain when i eat, i get excessive gas after eating, and my stomach is gurgling. I have been bowel cleansing and i have seen some of the pics that shows what an intestine could look like. Now i have reason to believe my intestine is messed up so i figure what can it hurt. Hopefully she isn't as big a waste of time as all the other dr's i have been too. Anyways i plan on asking her anything and everything about Candida, Low Blood sugar, Small Bowel Bacteria overgrowth, etc. I don't want to fight this Candida and have an underlying condition making it an impossible task. Are there any tips you guys have? Like what questions to ask? I plan on asking about a prescribtion antifungal. I also want all tests. I figured i have lived like a hermit for long enough, been in pain long enough,(fibro IBS) and lost my whole life that i am at least owed the dignity of some tests. So what tests do you guys suggest i ask for? I have heard about breath tests etc but i dont want to be vague when i go in i want specific tests to ask for. I know this post might not be the best worded but i am extremely foggy. Thanks to all who apply.