Heart irregularity. I do to help myself?

I have heart arrhythmia and I am taking Purgoxin 6 days a week. Recently I have a run away heart, I can feel how hart and fast it is beating and it makes me nauseous. For about a week a wake anytime from 3 in the morning without any breath. It feels literally if I stopped breathing, then I have to get up as quickly as possible and then I am very short breathed. It takes a while before my breath normalize again but as soon as I lay down again it happens again. So I have to stand up that time of the night and stay up to avoid this happening all the time. What can I do to help myself? I do not have money to see any medical practitioner now but i need to do something. It feels if I am going to die in my sleep very soon, if I do not get help.