I am also getting those symptoms. I recently started acupunture and noticed a difference already. I am also taking magnesium. I went to a cardiologist. These are called PVC's. At least the ones that I am getting are. He did extensive testing and said everything is good. Some people get these and you have to live with them. So I am looking at alternative medicine to see if I am lacking vitamins or minerals. See if your doctor will send you to a cardiologist. We are our own saviour. Good Luck
I also get skipped beats, usually when lifting something or mild exertion. However years ago I got them for no reason all the time, I get bigeminy and trigeminy where the heart skips every second beat or skips every 3rd beat. I'm 22 now and they still scare me but honestly if you don't have heart disease you have really nothing to worry about unless they come in strings for example, when the heart skips its normally followed by a harder beat, but in some cases the skip isn't followed by a beat instead its followed by another skip and if its atleast 3 skipped beats its considered NSVT which can lead to V-Fib where your heart is a quivering mess that can't pump blood and usually results in sudden cardiac death.
I'm not a doctor but I've been reading about cardiac rhythms for years and I've been experiencing it too.
I would advise you to see a doctor just for a peice of mind, I'm sure yiur fine as long as you don't get chest pains, faint, dizzy with your skips there's really no sign of anything serious going on.