"Throughout this process, your ovaries are sometimes producing too much and too little oestrogen and/or progesterone. Your progesterone is likely to fluctuate more than ever before.
This can lead to periods of very heavy menstrual bleeding. If it is heavy and totally unexpected, go and see your doctor as soon as possible in order to ensure that the bleeding isn’t caused by a more serious condition.
During these periods of heavy bleeding, Cottons Maternity pads can help manage your irregular cycle. Made with a unique 100% cotton coversheet, they are chemical free and hypo-allergenic. They are also super-absorbent, so if you start experiencing very heavy flow, give them a try."