Thanks for writing to us. i would be more concerned about your cough
and its cause rather than missed beats and a BP of 130/100mmHg
1. Missed beats are more often than not are benign. Moreover they are common in acute respiratory conditions (like you have cough, a symptoms of respiratory disease), those who take more of tea/coffee and many other conditions.
2. A systolic BP of 130 is OK but a diastolic BP of 100 is high. keep monitoring and if this trend is persistent discuss with your doctor.
3. What gets worse on lying down? Didn't get anything dangerous in your description. please rewrite with more details.