I've been looking online at swallow syncope, which says it's rare, but it seems that many many people have experienced it. This morning I took a swig of Dr. Pepper with my morning birth control pill and almost passed out. I had a sharp pain in my chest and started sweating and feeling weak. My fiance freaked out and threatened to call an ambulance. I sat down and felt much better, but the pain was so sharp and like a rock. I could barely breathe. I'm only 23 years old, 5 feet tall, 130 lbs. Never have had any medical problems. Is this something I should be worried about?