I have odd digestive symptoms that won't go away.?

As the title suggested, I have several symptoms that I have never really had before, and they're starting to worry me.

I have aphthous ulcers (mouth ulcers) that show up and go away every few weeks. They are probably the most annoying things I've ever had. I hate them with a burning passion.

I have diarrhea that is very persistent, and has me dashing to the restroom almost every hour, and sometimes even more frequent. (TMI alert!) It's a light tan color and is completely liquid. No solids whatsoever.

My stomach is in constant aching. Just shifting positions makes me grimace.

Fatigue. All I want to do lately is SLEEP. And I can't afford to do that, because I have a two-year-old.

I have almost entirely lost my appetite. No food sounds good, minus the occasional junk food.

I absolutely crave sweet drinks. Juices, soda pop, overly sweetened iced tea, margaritas (I love those!), riesling, white zinfandel, etc. Sweet, fruity and cold.

My weight, despite consuming nothing but sweets and fruity beverages and being Slob of the Year, is continuing to drop. Last week I was 225 lbs and today I weighed in at 216 lbs.

I'm pale. Well, more so than usual. I could seriously pull off the vampire look if I put my Scarecrow fangs in... Also, totally unrelated, my wife thought it would be funny to put glitter on me.

If you could give me some examples of what these could add up to, please let me know. Alternatively, if there's a website that would allow me to type these in, that would be great.