Bring Me the Horizon vocalist Oli Sykes was struck by a phone thrown at him on-stage during a Monday night concert, with the singer revealing he has suffered a mild concussion from the hit. Sykes took to his Instagram Stories on Tuesday to address the incident after a video of him being struck by an object stirred up online. “Alright everyone — just wanted to let you know I’m all good,” he wrote. “The phone to the head definitely smarted and I ended up with a mild concussion, but the swelling’s gone down a decent amount already.” The “Can You Feel My Heart” singer explained that he was “struggling” during the remainder of the performance after he was hit, issuing an apology to audience members. He wrote.…