Why am I bleeding on the hormonal coil?
Frequent bleeding and spotting is common in the first 3 months after insertion and can continue for 6 months in some women. Science isn't quite sure why this happens, although we think it's that the blood vessels in the womb lining become more fragile and therefore it becomes thinner over time. However, if you persist there is a 90% reduction in bleeding over 12 months of use. After 1 year, most women have infrequent or no bleeding at all and after 3 years, 1 in 4 women won't have any periods. However, some women may also continue to have spotting or light irregular bleeding long term.