<s>[INST] Im on the  12 week contraceptive injection, have been for just over a month. My period was two weeks late and has being going on for 3 weeks. Im not the most regular anyway but Im normaly on heavy for 5 days. I have been just as heavy throught the last 3 weeks. Is this just a side affect??? [/INST] Hi, During the first couple of months of hormonal contraception, menstrual disturbances are often seen, but, heavy bleeding of this sort needs immediate medical attention. You would need styptics and a change of the contraceptive method, if there is no relief. Usually the situation gets under control as the menstrual disturbances abate as the body readjusts itself to the altered hormonal milieu. Please maintain genital hygiene, a healthy diet and take adequate rest. Hope you find this information useful. Take care. </s>