I've been taking levlen for about 4 years now and I've been getting severe headaches/migraines which is a side effect of levlen for the last 4 months. I haven't been able to work out a trigger for these headaches as of yet and I'm wondering if it could be my BC. I drink 1-2 litres of water every day, eat a fairly good diet, exercise regularly, I've had my eyes tested and that was all normal. Wondering if anyone else has experienced this?