Loren Pechtel
Explorer
Sorn said:I agree with Loren here... it is a proven fact that using multiple forms of birth control is the safest way of having fun. Most modern form of contraceptives have a chance of failure (usually indicated by a 99.9% rate of success), but it really bites if you are the 0.1% couple. Hence, you combine contraceptives. To keep down the amount of flipping through pages and calculating mods, it's probably easier (and just as realistic) to keep the miss-chance and make cascading rolls.
Consider: FDA requirements for the use of thalidomide are sterilization/menopause/abstinence or two methods of birth control.
In a fantasy game, without modern quality control, none of the mundane contraceptives will be all that great. The only sure-thing way of preventing babies is magic.
Sure, they won't be all that great--but I would figure 80-90% effectiveness even then.
Agreed... My example was a little over-the-top on purpose. Besides, all that stuff in or on the genitals will make any meaningful intercourse nearly impossible anyway.

That it might!
Most people will use one form of contraceptive, and a few people might use two. I can't really imagine anyone being as extreme as I outlined. The time it would take to apply all of those items would seriously ruin the mood if you ask me.
You might very well see more in ancient times when childbirth is more dangerous and individual methods aren't all that reliable.
Note that there are 6 basic types, only three of which are used at the time of intercourse. What if both partners are taking whatever the primitive version of the pill is? That's two or possibly three methods right there without any bother at the time.