about four days ago i had stuffy nose, a dry cough and sneezing so my mom gave me two advil cold and sinus pills tht morning and two the next day and ever since then my heart has been racing and was fluttering.... I went to the emergency room yesterday because my heart was fluttering and beating fast and was able to take a ekg The nurse said it showed up sinus the other nurse said i could be having palpitation and sent me back to the emergency room where i was waiting three hrs and never been seen so I left and went home today I went to my doctor and was diagnosed with Tachycardia .. She took an EKG and said that s what came up .. I believe it was the advil cold n sinus that made my heart flutter and race because today it s had not fluttered and isn t beating as fast as it was yesterday .. Help what do u think?