I'm no expert by any means, and I'm sure one of them will give you their opinion, but I just wanted to say that I wouldn't worry and that you just probably need more rest. You're still so early since your concussion and have had such a wonderful recovery already! Any chance you can take a bit more time off of work to ensure a full recovery? If you overdo it now you can actually have a relapse and that would make it take even longer.
Good luck and try to get as much rest as possible, which of course means rest from all stimulation not just physical rest.
I'm a 39 year old, female, accountant. On July 2, 2012 I crashed my bike at the end of a 65KM road ride. I was fine that day but woke up the next morning to my current world.
Ongoing symptoms include: dizziness, blurred vision, light and noise sensitivities, cognitive problems, uncontrollable emotions/depression/anxiety, headaches (but they're getting better), mental and physical fatigue, difficulty communicating and sleep disturbances.
Currently seeing a fabulous Neuro Psychologist and vestibular physiotherapist and hoping to soon see a neuro ophthalmologist. I am currently doing 20 minute stationary bike rides daily, 20 minutes of meditating, 15 minutes of Lumosity and lots of resting. I have not been able to work or drive since the accident.
The things that have helped me the most since the accident are vestibular therapy, gel eye drops (for blurred vision, sensitivity and dryness), amitriptyline (10mg), and meditating. I am finally starting to see some slight improvements and am hopeful!
My brain WANTS to heal itself... I just have to let it and stop trying to get better!