I am 51 year old healthy woman. I take losartan for high blood pressure. Today was the second time in 3 weeks I had this type of episode. It wasn t on the middle of my chest more like on both sides of my chest, like under my arm pits. I had an uncomfortable pain, not really pressure but very uncomfortable. It felt like a wave and after a few minutes it passed and I felt perfectly normal. On both occasions I wasn t doing anything strenuous. I exercise 3x a week and am fine with cardio as well as when using weights.