If you don't stop running the pain will get worse and worse to the point where it hurts even to walk. Get yourself assessed by a private physio, the NHS won't be any help. If you happen to be in the Bristol area I know a very good one. But you must stop running for now.
there's nothing you can do other than stop running for a while, and if you go back too soon they'll come back. keep doing cardio just not impact then you wont drop any fitness when you get back pounding the pavement. also when you do get back avoid running with weight for a good while.
there are literally HUNDREDS of posts on here about shin splints and how to help them. Many sufferers have sworn by going to a good running shoe shop who can analyse your running gait and advise you on trainers that correct any discrepancies.