i would say you need to have an oboe teacher evaluate your playing form. it sounds to me like you're blowing too much with your face/head and not enough from your diaphragm. you should always generate the "wind" for your woodwind from your belly not from your head or upper body. you might consider doing some exercises that strengthen your abdominal muscles (or "core") so that you can breathe in the proper way to blow into your oboe. i'm not an expert on playing musical instruments which is why you're better off consulting a music teacher than a nurse. <positive_smiley> wishing you well!
how can i avoid pressure headaches when playing my oboe?