So about two days ago i was just walking round town when the front of my shin started to hurt, not a sharp stabbing pain more of a throbbing ache. So yesterday i decided to take a day off from exercise and i still have it today. It feels a bit like when you've banged your leg and your getting a bruise, and no i have not banged my leg. I'm supposed to do my last run of week 4 today and i'm worried if i'll stop my fitness level will decline really quickly and all my hard work will be erased! anybody got any advice?