Birth control and migraines

Monica • My husband and I are 36 and 35, high school sweethearts, married in 2005, son Gavin born 11-27-15. PSU grad, work for small newspaper as a reporter.
I'm almost six weeks postpartum and need to decide what birth control to take. I was previously on the pill, but I believe it contributed to my migraines, especially since the headaches haven't returned since giving birth. Being pregnant was the only time over the past 16 years I didn't suffer from migraines, so I do believe they were often related to hormones. Any fellow migraine sufferers have any birth control recommendations?