Intermenstrual bleeding (metrorrhagia), i.e. between one menstrual period and the next, may be caused by hormonal imbalance. This is unusual during hormonal treatment with contraceptives since, if taken properly, regulation is strict. Therefore, having a breakthrough bleeding may indicate a failure of regulation, perhaps caused by the interaction with the antibiotic.
Read the full article on: Hormonal contraceptives and antibiotics: how do they interact? ( 25).
Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia. Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia along with the Valencian Infertility Institute (IVI). Postgraduate course in Medical Genetics.