I have fluttering in the left of my back. It feels like kicks you have when your pregnant. Ive had two lots of chemo which has resulted in my periods bin very speradick.ive had a period this last few days this has bin the first one in around 5 months my last lot of chemo was three years ago. Im not in pain in my back but did have discomfort in my belly yesterday which i presumed was due to my period. This sensation in my back has been constant the last 24hours.