Yes,birth control over long periods of time can dangerous. My cousin was on it for 10 yes. she ended up being hospitalized 4 times because of blood clots. She had blot in her legs, lungs. She had to have several surgeries, after the surgeries the blood clots came back.
You could order nigella sativa oil from Amazon. You want cold-pressed, organic products that are highly rated by buyers. You would take it with some high-quality raw honey such as you could buy at Whole Foods Research it for yourself.