Best contraceptive ?

yes she can go to the gym with an IUD fitted

There's no one type of birth control that's best - it's more about what's best for her.

IUD's are a very good birth control - 99+% effective, don't interrupt sex or require user to remember to take pills, and copper IUD's mean no suppression of the menstrual cycle so far fewer side-effects. Yes, of course you can exercise with an IUD - I've had a copper IUD for 10 years and I'm a weight lifter so I'm at the gym every other day.

If you're going to rule-out hormonal options due to side-effects, and condoms, this leaves the following choices:

* IUD:

- Hormonal IUD (99%+ effective)

- Copper IUD (99%+ effective)

* Barrier methods;

- Femidoms (86%-98% effective)

- Diaphragms (86%-94% effective)

- Caps (86%-94% effective)

- Shields (86%-94% effective)

- Sponges (86%-91% effective)

* Spermicide;

- Gel (72%-83% effective)

- Foam (72%-83% effective)

- Film (72%-83% effective)

* Fertility Awareness Method (FAM) (76%-98% effective)

* Withdrawal (73%-96% effective)

Hormonal IUD's and the contraceptive ring can have lower side-effects than the combination pill so may still be options to consider. Options like spermicide can't be used alone but you can combine methods such as using spermicide with barrier methods or withdrawal to increase effectiveness - combining methods gives more options.

Note: there are multiple methods included in FAM and tools to practice FAM with varying effectiveness - e.g. symptothermal method with an app like Daysy would be more effective than calendar method with cyclebeads.

Note II: There will be methods that aren't suitable for you at all such as sterilization (99+% effective) if you want to have children in the future or vasectomy (99+% effective) if your partner wants to have children in the future.

Planned Parenthood - http://www.plannedparenthood.org/health-info/birth...

Method Explorer - http://www.bedsider.org/en/methods