I have breast cancer and I take reseligo every 28 days from October 27 plus etruzil. In November, December and January I did not have menstruation. Today, February 1st, to my surprise, I got my period. I would like to add that in January the nurse who gives me injections changed. Is it possible that she did the injection wrong? Or do we count the days wrong? So far, nurses have pierced perpendicularly into the abdomen, and the current one stated that such a thick and long needle as for puncture will not stick perpendicularly and stuck at an angle of 30 degrees. This worries me about bleeding a few months after taking the drug. I have to remove the uterine polyp and I wonder if it can also be the cause of bleeding, but the discomfort in the lower parts of the body I feel like in a typical period (muscle tension). The day before this unexpected period, my husband and I were having fun, but there was no penetration. I read a similar story on the internet and someone explained it with orgasmic contractions and some remnant who could not get out after the last menstruation. I feel fine overall, but I'm worried about this bleeding.