Was at docs early this week (saw a nurse practitioner) asked me lots of questions etc prodded poked and ordered blood tests, and was concerned about my blood pressure so made appt to have this checked again For last 3 nights I have woke up at 3.00 am 2 of them with heart racing and sweat pouring off me, my stomach is burning constantly and I haven't been to toilet since Monday . When I lie down and start to fall asleep I get a horrible feeling thats difficult to describe .Feel terrible . Im really worried now .