Am thinking of stopping the pill I have been taking for 20 years (trinordiol) and swapping for mirena. Other than the obvious advantage of not taking a pimll every night what are people\'s experiences with this vchange. Will weight gain be an issue? Surely after twenty years on hormones my body will not change? Aren(t there fewer hormoones in mirena than in the Pill? Shouldn\'t it be better?