 [ Symptoms ] if an 8 year old has a cold can she get the flumist vaccine [ Disease ] hi in the first year after the implant is fitted your periods may become irregular lighter heavier or longer this usually settles down after the first year a common side effect of the implant is that your periods stop amenorrhoea it is not harmful and it seems to trigger some bleeding that is dark brown your periods may change significantly while using a contraceptive implant around 20 of women using the implant will have no bleeding and almost 50 will have infrequent or prolonged bleeding bleeding patterns are likely to remain irregular although they may settle down after the first year although these changes are not harmful they may not be acceptable for some women your gp may be able to help by providing additional medication if you have prolonged bleeding but if you think hour still having problems please see your doctor do hope this has helped you good luck