I would definitely recommend seeing a specialist because they'll be able to more accurately assess your symptoms and make you feel a little more at home/comfortable with the possible rest/treatment your brain needs. i know it's a frustrating process - I too had my first concussion this year and needed desperately to get back to school and my sport (which I was on a scholarship to play at my college), and the last thing I wanted to hear was that I needed to rest/take the time my brain needs to heal. I cried for weeks about it, to be honest. But I soon found that whether I wanted to or not, rest was the only option to stop the pain. I think also you should listen to your body, what you said about screens is interesting and probably pertinent - if you get headaches when you look at screens, try to limit or shot down all computer/tv time if possible. If you require a computer for school, maybe try to explain to your teachers/professors what's going on and see if they can work with you. There are (hopefully) ways that you can still move on with your day-to-day life with modifications for now. I wish the very best for you