Sweet..... or not so sweet 16

My knee has given me fits all week. Not the injured knee from the skiing accident, but the knee I smashed last Saturday in a mountain bike crash. It's still swollen, extremely tender, scabbed over and blue-ish, red and I'm having problems with it being really stiff. When I sit at my desk at work and don't move it for awhile it literally will not bend. When I have it straightened out and try to bend it, it doesn't want to do that either. This week I ran 4 Monday morning before work - it hurt very very badly - right around mile 2 if I woulda had my phone, I woulda been waking someone up to come pick me up! Tuesday it seemed to feel some better so Tues night I went to the rec and ran 5. At mile 2, it was excrucitating pain. So I stay off it the rest of the week. No trainer - nothing - until yesterday. I had 16 on my schedule for my long run. So I reported to work early and left around 3-ish to do 16 miles in Tullahoma. Mile 1, I can feel a twinge of pain in the knee. Mile 2 - still feeling it. Mile 3 - hmm... still there but this is tolerable. If it doesn't get much worse I think I'll be ok. Mile 8 I climb a hill on Carter Blake road that really set me into a fit. I took a shot block & drank more water out of my fuel belt. So I gutted out the last 8 miles probably in the most pain ever. I was running right around sub 8:30 miles until I hit mile 13 - the pace dropped to around 9:10 I think.... mile 14 - I died. I look at the garmin - PACE-10:36. OUCH!!! My body is not wanting to go forward. PUSH, Holly PUSH. You are too close to stop now. Meet our goal!!! OMG... Outta gas. DEAD LEGS. That was the point where I'm saying "pick up your right foot, now scoot your left foot" and I felt like I was shuffling out the last 2 miles and every part of my body was shot - gone! I completely broke down at mile 14 - I think that's the first time I've ever really experienced a true breakdown where I didn't think I could make it. Pure misery after mile 13. I really did not expect to feel like that until I did an 18 miler.... but I was wrong. Total time: 2:23:55 - 8:59 pace. I am not as strong as I thought - the 16 miler was a whole different ballgame. How will I EVER add 10 more to that? I don't see it. Even 1 more woulda been outta the question. I think I'm going to start trying some GU.

My knee is in a pittiful shape today. It hurt for even a blanket to touch it last night in bed. I'm taking ibuprofen which seems to take the edge off.... but the tenderness and stiffness is indescribable right now. How do I handle this for this week's training?

So, I've noticed a trend. After every long run (12 or more) I have flu-like/stomach virus symptoms for approximately 3 hours afterwards. We are talking.... cold chills, almost as if I'm running a fever. Extreme stomach and digestive issues and can't decide if it's going to come out of one end... or the other. It really sucks because I am SHOT for pretty much an entire day when I do a long-run. This time I even forced half a blueberry muffin down when I got home to try and avoid the sick feeling. I did not feel any better until I got up this morning. Anyone have any advice or suggestions? Am I dehydrating myself and it's causing nausea? What am I doing wrong?