I'm 28 and have suffered ectopic beats for over 3 years now. Started noticing a feeling at the base of my throat which would make me cough, then after feeling my pulse, realised it was my heart. Scared the life out of me and i was already suffering from anxiety. I've had numerous tests done which have all been clear. Being so intune with my body i guess they are just more noticable. They have also changed in the time i've been having them. They started as the extra odd beat, then i would notice skipped beats and more recently i have this flip flopping sensation which can last around 10 seconds. Some days i barely get any, and other days i'm plagued with them. I'm still not sure what makes them worse but i'm just trying to live with them as hard as it is and as uncomfortable as it feels at times. They really do suck!!!
Good Luck, clare