Yes, I'm in the same boat here. My symptoms started around a month after the initial blow to my head. After the MRI etc my doctor had said that it was possible that I had a mind concussion but that I seemed ok(!). I wish I had known to rest! I continued with everything, work, partying, travelling and then BAM! full-on symptoms a month later. I'm now looking after myself (have had 2 weeks off sick leave, now working again which is exhausting) but worried about how long it will last.
I wish you the best in your recovery!