Sensitive to gadget screen

Hello mummies, Had anyone experienced lightheaded or constant headache from seeing gadget screen- like your phone, laptop? I never had this but quite recently, as I got to know I am pregnant, seeing those screens just gave me lightheadedness and headache, to the extent that I puked and made work less productive. I am currently on 2 weeks of hospitalisation leave, but replying work emails and texts from home. Is that even right? #advicepls