hello .I just went to bed to sleep. n few minutes later suddenly while in my phone my heart start bit ting so fast . I quickly mesured it with my Samsung senser .n it was 114 bpm.knowing that I m 32 years old n was diagnosed with rhumatoid arthritis 6 months ago . n have e a modérâte lung disease likely from Ra aswell. quite stressed . please help.is thus dangerous haven t had anything such before .my parents have no sickness at all no heart problem .however my g mother .mother side died at the age of 31 .she had a heart problem. her heart was biting fast shall I be worried ???!