When "Normal" Is Bad

So, the blood and urine tests were normal. I have to go back Monday for more tests. I feel like crap. My stomach started hurting this morning. I'm nauseated and I'm losing my appetite. I forced myself to eat last night. This sucks!

I just want to know what's going on so I can fix it. Why are doctors so damned slow? Why can't they just test for everything at once instead of padding their pockets with multiple visits?