I'm hoping someone can give me peace of mind here....I'm a 24 yr old female...5'10, 150 lbs...not super active, but active enough.... and for the past couple months, I've been having weird feelings in my chest...it is really hard to explain...but it's kind of like the feeling you get just after you sneeze...like a tingling or shiver...well, I get that feeling in my chest only it doesn't happen after a sneeze, it just happens. It's usually at night when I'm relaxing. And it feels like if I take a deep breath it would get better, but it doesn't. It's not painful at all, but just a worrisome weird feeling. Nothing ever happens much during the day or when I'm active. When I think about it, it seems to happen more often. Oh and also, it only lasts for a couple seconds...and sometimes that's it or sometimes it will happen again soon after. Anyone ever had this before or have any idea what it is?