Cant tell if its breast pain or heart. im also mensturating at the moment. its like when you have ache. really brief. ekg, xray normal to. thanks?

Well: At your age, with a negative work up, it's unlikely to be the heart. The breast should not be so severe it warrants the work up. It might be a muscle strain between your ribs. It could be an esophageal spasm, it's hard to say. I don't want to bring in anxiety but this may be making the interpretation worse. Insomnia? With a non chest pain and neg workup up in 19 yo , anxiety could exacerbate.