So for the past few days baba has been doing this fast ‘pulsing’ or rocking thing; you can’t feel it but can see it when looking at bump seems to be around his back or bum but you can see one spot going up and down really fast like a fast heartbeat or something? Other Baby moves are normal but unsure if it’s something to worry about? Anyone had anything similar. Not sure if it could be breathing practice or thumb sucking?? Deffo not hiccups too fast and gentle x