my psychiatrist suggested i go off bupropion cold turkey...

hi everyone, this is my first time ever going off medication. i was taking 150 mg of bupropion XL and i felt like it was making my anxiety worse more recently than better so after a few months of taking it i brought this up with my psych and they suggested i stop cold turkey, so i did. i asked if it was alright and they said that it was. my anxiety is better but my headaches are killing me, is there anything i can do now? i'm afraid i might've screwed my brain up by going cold turkey :(