Sore legs

[Deleted User]

Hi there ive been getting pains at the side of my shins for a few weeks now and its got worse.  My average weekly mileage is 20 miles at the minute, never had the problem before, not sure if its my trainers, I am over prontated but have trainers for that but I have had them for 12 months now, Or if I have just pulled something as only started running outdoors again 4 weeks ago.  Its in both legs but more so on my left.