Lele, I'd say it's anxiety the mind is a powerful thing that can create physical symptoms and it is scary which make you more anxious and you get stuck in a vicious cycle of thinking. I'd go and see the doc and see what he suggests as living in fear is horrible. I've never had meds in my life till this and I'm willing to give anything a go to control it as it is very scary indeed. If you have any questions email me or put them up here and I'll try my best to help as know what you must be feeling like all too well myself. Take care.