I've found this a very interesting discussion. My mum is the rare blood type (A rhesus negative?) But had 3 children with no difficulties, myself being the eldest. Then she had a miscarriage and a year later my sister who was born jaundiced. I recall she said it was to do with her blood type and the babies blood and her own blood "not getting on with each other" but as a child I never questioned it. I never realised how serious this was but mum and dad probably had it explained to them at the time (late 60s) needless to say we stayed as a family of 6! Sadly my sister wasn't a completely well adult with recurring IBS which turned out to be bowel cancer and took her from us at the young age of 43! Andrea Sent from Samsung tablet