Just had my 1st twin waterbirth. Well it was the moms 5th birth w me, & the last one had been a waterbirth, so she wanted another, naturally. SHe had a beatiful waterbirth with the 1st baby, a 7lb girl, who came out sunnyside up! But then she started to bleed between babies, so I thought it would be a good idea to get her out so we could track the bleeding more precisely. About the same time she announced it "didn't feel right in the tub anymore" so she got on her side on the bed & out came 8 lb 5 oz brother, 1 .5 hrs after his sister. EBL was only about 3 cups, not bad for twins. The fused placenta with two sacks was amazing! While I knew some bleeding was possible between twins, I had never seen that happen, & didn't give it much thought. Now that I look back, I wonder: How common is it? When do you worry?