<human>: I have the nexplanon implant. I got inserted October of 2014. For the past 2 or the months I have been going only 5 days between periods and my periods would last around 10 days. I get really bad headaches and get really lightheaded it prevents me for going about my day as normal. What should I do?
<bot>: Thank you for the question, and I am happy to help.First, you need to check a pregnancy test.  Given that there is no form of birth control that is 100% effective, this needs to be the first thing ruled out.  Assuming that this is negative, here are my thoughts:1.  Women can have breakthrough bleeding on hormonal birth control and this is quite common.  This is often due to the thinning of the lining of the uterus.  This is particularly common in progesterone only forms of birth control such as the demo shot and nexplanon2.  Excess bleeding can lead to anemia (a Chat Doctor. You need to schedule a visit with your doctor to check your blood counts and also to perform an ultrasound.  There are other common and benign causes of bleeding and this should get sorted out. I hope that this helps and good luck!