I exercise 6 times a week, high intensity weight sessions in the gym or road running and have found it to be a major asset to controlling my diabetes! I'm 21, diagnosed 18 months ago. If I didn't exercise as much as I do, I would probably be taking 10x the amount of insulin. But because of my exercise regime I am on a extremely little background insulin of just 2 units a day (only once in the morning) and the maximum of 5 units novarapid with meals and I don't follow a low carb diet. When I was diagnosed my DSN was adamant that I didn't stop or let the diabetes hinder my training. The meal before exercising I reduce my novarapid by 20-40% and take water with glucose powder in it (you can buy if from holland and Barrett) and just sip on it. But personally I prefer to reduce my insulin beforehand than have to 'top' my sugar levels up throughout exercise as sometimes a sweet drink like lucozade makes me feel sick. So yes my advice is get back on the pitch!!
for the first few times test in the middle of exercise to see which types of exercise affects your BG levels, correspond with your DSN then you guys can figure out how much you need to reduce your basal/bolus before and after exercise. Weight training increases my BG levels but running obviously lowers it. I can't recommend exercise enough to type 1s, it has helped with my management massively and I have a hb1ac of just 5
good luck!