It's just blood, but I spoke to the midwife today and she said that its perfectly normal and it can take awhile to stop depending on how long it takes for the hormones to leave her body.

My milk is definitely in, been through the initial engorgement and all so it's not because of transition milk. Midwife said I could try changing my diet and see if it made a difference but she wasn't real worried about it. Bub has already gone past her birth weight so she said she is obviously feeding well.