Hi, I have a history of concussions and recently got hit with a volleyball 2 days ago, I m nauseous and experiencing some neck pain. I m worried its another concussion but its not like the ones I ve had before. I tried to go to work earlier today and could only last 30 because the nauseous was so bad. Please help me with what to do, I m a 19 caucasian female in great health before this happened I think the nerves are getting the better of me but I wanna be suree.