I switched from the pill to an IUD and now have cysts

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I have had a great 3+ year run with wirh the pill, but I had to stop due to the fact I got migraines and started getting auras, which means I was at risk of a stroke. 
A side effect I was not considering from my IUD is that now I am not preventing cysts anymore. They have been acting up for a few weeks and now I remember how much my cysts sucked.