Information and side effects of The Pill?

Thinking about taking the pill, mainly to regulate periods but I know a couple of the side effects, including gaining weight. I realise how pathetic it must seem, but that alone put me off taking the pill. This is because I've had issues with weight in the past and having worked like hell to lose it, I've recently been diagnosed as bulimic. I'm working well to beat it, but the fear of gaining weight will always be there.
Information and side effects of The Pill?
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