It's one of the weirdest thing I have felt. Sometimes it is after I am exerting myself and other times just sitting on the couch. I'm glad to hear I'm not the only one experiencing this.
I have felt the same thing!! It will only last for a short time, then just go away!
I'm at 25 weeks, and I still get that feeling occasionally :-/
I feel the same I'm 5 and a bit weeks and I get the same feeling, nice to know I'm not the only one.
Completely normal!!! I experienced that too. You have about 30% more blood in your body now that you are pregnant so your heart pumps harder. Nothing to worry about.