Ouch, ouch, and hm. I assume "the coil" is the copper coil IUD. That's not usually prescribed for reducing periods, as it can cause heavier periods in many women! The Mirena, however, can reduce the period. I'm sure that your doctor has some reason for suggesting the coil.

I'd go with the coil. It's the least painful and it's the only temporary option! If it doesn't work, then go on to more serious procedures.