I need some help 
I've recently started running, all was fine for the first couple of days, I was taking it easy, taking my time and not straining myself too much, but a few days in I tried to push myself a bit further and now I'm really regretting it.
The outside of my left foot is agony when I walk, it's been a week since I last went running, I thought it just needed rest but a week later it's getting so much worse, the pain is making me feel sick, it's completely fine with no pain while I'm resting but as soon as I start to walk it really hurts, anyone with any experience know what it could be? Will more rest heal it or do I need to be off to the doctors?