I used to have racing heart with flutters in different spots of body, but usually bottom of rib as you say, now they converted to skipped beats all the time.
BUT; it is just like never2late said, I completely agree with him. Even before I read his post as I was reading others' I had a flutter at my left rib cage (tho not the exact spot). I hadn't had a flutter for some time but as I am reading about it, BAM there it comes. So people, try to think about them less, that will help. And I will also tell you something. I constantly have skipped beats lately. But I was on a trip with a group last weekend and guess what, I didn't have a single event! Why? Because I was busy doing other things. Try to keep yourself occupied, do puzzles, play an instrument, just keep your brain busy so that it will not think of silly things
btw skipped beats FTW LOL