<s>[INST] Hello, I have been taking the Noriday pill for around 10 months and have had regular periods whilst taking it however last month i had a break though bleed that lasted for around 2/3 days then had my regular period i am due to have my period again in a couple of weeks but the beginning of this week I got another break through bleed but this time its just a brown stain and occasional brown discharge is there anything to be worried about ? [/INST] Noriday is progesterone only pill, and breakthrough bleeding is more common than combined estrogen-progesterone pills. So you may change the pill with doctor's advice. Other cause of inter menstrual bleed may be a small polyp or erosion of the uterine cervix. This can be detected by clinical examination with a speculum. </s>