Fluttering, vibrating, popping feeling on right abdomen between hip and behind rib. No pain. Just switched my almost 3 month old son (2nd born, but 3rd pregnancy) to formula last month. Every pregnancy test says negative. No UTI. I had my gall bladder out in 2009 and have had plenty of kidney stones . This is not ghost pains, nor kidney pain. No trouble urinating. All other functions are normal. I have hyperhydrosis(sp.?) so dehydration has always been a problem causing muscle cramps , but gain this doesn t hurt. Can t figure out why these strange sensations keep happening. Any ideas.