I feel like a blockage of breathing ? Im 16 female, im on birthcontrol, i have heart palpulations sometimes. I have had headaches lately.. usually when im with a few people i feel i cant breathe, but now Its happening when im just sitting at home. I feel often dizy, sharp pains in chest a lot. Im just scared and dont know whats going on. I fear like, when i cant breathe im going to die.