Hit Back Of Head While Playing Rugby. Having Swollen Neck, Throat Hurts While Swallowing. Reason?

I recently played rugby with my friends and when I got tackled, I hit the back of my head really hard and I ended up with a big bump and extreme headache . I didn t black out or anything, I was conscious the whole time. The next day, I was in so much pain because my neck was hurting and so was my throat . Day 3 my neck is getting better and the bump is gone however my throat is irritating me. When I swallow it doesn t feel right, it hurts. Even when I m not doing anything with my mouth, it still hurts every now and then. I just want to know what the problem could be.