I posted about blisters a couple days ago. Found out my form needs help. But, Wednesday this week I developed foot pain on a run and read a thread here about pain in the ball of the foot and thought it was maybe like that, a possible "bruise" on the bone or somthing. Well, call me stupid and over eager I ran on Friday wanted to give the new form a try. I think I ran 1 1/2 miles maybe a little less. The new focus on form helped A LOT for blister pain - none! BUT, towards the end my foot started to hurt again like it did on Wednesday. What happened on Wednesday I don't really know, I didn't roll my foot or have an "accident" of some sort, just all of a sudden during my run I feel pain in the ball of my foot like a bone was protruding out and it was sore all of sudden. Later on the pain seemed to feel deeper and could be detected from the top of the foot also. Rested Thursday from running but I'm on my feet for work and other things. Ran Friday because I didn't feel the pain anymore but it came back at the end of my run. Friday we drove south and attended a festival, on my feet for 3 hours at that. Pain persisting. Saturday All day festival as well and I took advil which helped for a while during that but at the end of the day pain again only this time I see swelling as well. Woke up today still limping from pain and swelling. It's the swelling that worries me. I really hope it's only a strain but don't know what the possiblity is for a stress fracture. Should I rest it? (I know I should but to what extent?) See the doctor tomorrow? I have to go back to work too. Don't know how to proceed, if this warrants time of from work? :-( Thanks for any advice.