I recently was prescribed Metoprolol for my migraines. I have been on Topamax for quite sometime but was tired of living in a fog of constant confusion, fatigue, and lack of focus. I was switch to Metoprolol. I have been taking it so far for a week and without fail every single day multiple times a day I have extreme chest pains directly under my left breast. It feels like a stabbing pain. Attempting to breath during an episode is excruciating. Is it due to the new medication?