Have you talked to your dr. about this pain? It sounds to me like it could be costochondritis, which is inflammation of the cartilage between the ribs and sternum (breastbone). It's nothing serious and usually goes away on its own. You might also just have a bad case of heartburn. I'm 18 weeks now and I've been getting heartburn for the past two weeks. It feels like my chest is on fire. I hope this helps. I know chest pain can be frightening.