The last few nights I have gotten very little sleep. I get to sleep, and then about three or four hours later, I'm awakened by my heart beating so fast, it feels like a heart attack. I usually sit up for about an hour and go back to sleep. Last night, I was awakened again with the fast heartbeat, but, I also had two numb/tingling arms and my right leg was numb. I recently had an EKG and things were fine except I have a mild tachycardia. When I sit up, I do my blood pressure and it's fine, my pulse is a bit raised. I did some reading online and a lot of people say it's anxiety. It makes sense because I've been under immense stress and am concerned about a few things going on in my life right now. Any sort of advice?

Thanks