As far as the IUD's go....oh hell no. Not again.
I had the copper IUD (non-hormonal) placed about three years ago.
Now (I apologize for the TMI) excessive bleeding and cramps is an understatement.
I was eating a paleo diet at the time, taking a lot of Omega-3's and I'm no stranger to both pain and heavy bleeding given I started my period at 9 and bled heavily. The IUD make it look like a walk in the park.
These cramps put me on my ass, I couldn't speak or think and I'd be crouched over holding onto something. I was bleeding measuring cups of blood (I have the Divacup lol, so I could do the millilitre counting, which at the end of seven days was about 380 mls---the average is 35 and anything over 80 is considered heavy). I was soaking through everything and had to change my cup every hour (extra-heavy super mondo tampons soaked through in 30 minutes).
To boot, I had wicked sore breasts and acne. My pms (I've always been a little unbalanced) was extreme.
I also developed discharge that wouldn't leave no matter what and had a chronically inflammed angry cervix (no STD's).
The last fricking straw for me was when it slipped and I got pregnant.
I had the IUD removed ASAP and unfortunately miscarried at just about 10 weeks.
For those not in the know, its not as rare as you think to conceive with an IUD in place.
The other thing that they don't tell you is once conceived, there's a 1 in 2 chance of miscarriage and that rate increases when you have to remove it (obviously). But if you don't remove it and you miscarry with it in place, you have a high risk of a septic miscarriages...which isn't good.
Needless to say.
There is apparently new stats on IUD effectiveness----they're not so impressive.
Remember folks, just because it isn't hormonal doesn't mean it doesn't have effects on the body---excess copper and a foreign substance DO NOT make the body happy.
Condoms, fertility planning, sometimes withdrawal and a bit of prayer have served me well since then.