My wife ,35, had a c-section delivery 5 months back. She has been completing of sinking heart for more than two months now. We consulted cardiologist about a month back who advised her to undergo ECHO and ECG. Both tests were normal therefore, no medicine was prescribed. However, there is no improvement still. She feels that her heart is going to sink (tingling sensation without any pain ). It happens irregularly (could be 2 to 3 times in a day for 3 to 5 seconds or at times not even once a day). No darkness before eyes but she feels shortness of breathing while taking stairs. She also feels pain in her elbows, middle finger of left hand and her right feet occasionally. Kindly advise. Thank you in advance!