hypochondriac

So I am struggling with the fact that sometimes I can be a hypochondriac and other times I just think I'm being a hypochondriac but really there is something truly wrong with me and I ignore it until its almost too late and I'm near death.
I have these wierd on going symptoms. basically minus the gorry details, My abdomin... the whole joint. Hurts like really bad all the time and I always have heart burn and what not and I have loss of apetite and just a lot of stuff.
I looked up some stuff on WebMD and this is the prognosis, the diagnosis, whatever.
According to WebMD Im lactose intolerant, which I am they got something right and I may have IBS or IBD or a version of those or I have a parasite (which would suck so bad, like I almost rather have a strange disease then know something ugly and gross and harmful is living inside me and I'm it's human host- it's life source if you will. just siiiiiiiiiiiiick!) oh or I have ulcers or something, oh or acid reflux, which wouldn't surprise me cause my mom has it. And there were like 20 other things I could have but they were all kind of wierd or a little too extreme or whatever, so I just kind of blocked those out. but basically I'm dying.
Oh and BTW WebMD does not help my hypochodria. Whatever you put in I sware it always comes up with cancer and I already feel like I'm going to get a cancer at some point in my life even though my vegetarianism puts me at less of risk of that stuff. I still think I'm going to get cancer. since I was little. WHO DOES THAT? Just sitting there with my dollys worrying about the fact I think I know I'll have cancer when I grow up. SO WIERD.
Anyways my dearest mother has instructed me to seek out a Gastroenterologist (what in the world, who even comes up with these names and medical terms). So, I have to call my insurance peeps and get them to hook me up with this dude that'll hopefully reassure me that I don't have cancer and just something else or nothing at all, proving the fact that I am in turn... a hypochodriac.