Is my testicle permanently damaged?

Well I was playing football I had my phone charger in my pocket while we were playing.I was thrown a p and this boy ran in to me full speed and POW!!!The charger in my pocket struck my my left nut I wasn't in pain or anything after that.But the next day their was a dis comfort in my groin area as I walked so I went to the job corps nurse and she said it was a contussion and gave me some pain pills and she said everything will be fine.But I noticed I don't *** as much as I did before the accident and I still have a lil discomfort in that area.What I wanna know is will I be able to father children and did I permanently damage anything plzzz help!!!