muscle and joint pain

So I've been training pretty hard for a 5 mile road race in two weeks, but not any harder than I have in the past for half-marathons and such. (P.S. I don't add exercise to my fatsecret calendar as I think the estimates are way to high for everything, so I record no exercise and call that bonus.)

I'm finding, though, that I'm having a lot more pain than I'm accustomed to, and I'm not sure why. Joint pain more than muscle pain, but both. At first, I thought it was from a cold I've been fighting, but it's not going away.

Anyone else experience this? Someone suggested maybe I need more potassium, but when I was potassium deficient when I was pregnant I was getting leg cramps like crazy and that's not happening now.

Any ideas welcome. I'm getting desperate. The race is in two weeks and it's getting hard to walk, much less run 5 miles three times a week in addition to my regular workouts.

I was going to jokingly say "Stop getting older", but "...it's getting hard to walk..." is a blinking red light that you need to go to a doctor. This could be anything from no problem at all to arthritis to lupus.

Yikes. Hadn't thought of anything so serious. You're probably right. I was hoping I could just eat more bananas.