Originally Posted by eastbay71

Sounds like Plantar Faciitis. Swellling of the tendon that travels below your heel to you toes. But I may be biased because I've been suffering with this since last October. If it is PI you will need to rest your feet for two to three weeks after the pain subsides. You should stretch the tendon by standing on a stair and lowering your body until you feel the stretch. You can also use a towel or a belt under the ball of your foot with your knee straight and pull your foot towards you. Use a tennis ball in the morning to roll under your foot to stretch it. Use a frozen water bottle at night to relieve the pain and swelling. The swelling is hard to see if it's not that bad yet. When you can see it you will be really sorry. Lastly take an anti-inflammatory like Ibuprofen everyday.
I was training for a Half Marathon and decided to up my mileage by 25% in one month. I found later you should only increase 10% per month. My foot started to get sore. I rested it for two weeks. I ran a 10k and then started snowboarding season and within a month I had to use a cane. I'm an avid snowboarder so I didn't stop right away. I should have stopped right away. I get re-evaluated in two weeks to see if I can start training again. If I would have rested for a month in October I would have been much better off.