I've always had a period every 29 days. Like absolute clockwork. I'm trying for a baby after ectopic in the summer and saw some good reviews for pregnacare. They also have a statement on the box stating that some women have reported their periods have been messed up due to taking this product. I thought that must be nonsense as none of the ingredients contain hormones however I started using this product 4 days before my period and on day it was meant to start it was nowhere to be seen. At all. I am getting all the associated cramps and sore breasts that u get with a period but no period. Has anyone else experienced this? Surely if so many women are reporting this then there is something amiss with the product?