Psyckosama
First Post
I see your point. One of the pros of monthly pregnancy resolution would be the uncertainty factor.
Yep... she doesn't know until you tell her (or she figures it out after a few early fort tests to resist nausia).

Now, how do we handle twins, triplets, etc. with this system? Have a flat chance for each race? Have a baby die for each race (e.g. Elf "litters" are 1d10-7 babies, minimum of 1 on a confirmed pregnancy) Beating the DC by X?
Personally, I'd go with the baby die. Allows us to come up with decent averages.
The flat chance would lead to d100 rolls, which I personally don't like in the d20 system.
Beating the DC is a can of worms. Imagine someone trying really hard to conceive a baby. All the couple wants is a single child, but to be sure, they use every method known to man to conveive and end up with a monstrous birth of 9 children.
Gez's system seems to be going in the direction of increased DC's for twins, etc. However, I don't think anyone is trying to get twins or triplets. It just happens, so I am not too keen on that approach.
Here's my sugestion... when you do the confermation role on a critical your roll again to conferm it. If there is a sucessful confermation, twins. If your critical AGAIN, trips. Then you conferm it... this can keep going and going until you stop rollign criticals.
Racial modifiers should increase the threat range as should magic...
Here are threat ranges:
Moderate Fertility Race: 19/20
Low/Very Low Fertility: 20
High Fertility : 17-20
Now, as for magic... add Caster Level/4 to the threat range adding up... adds some risks to useing magic to have children... you might end up with way too many.
Once it is confirmed that it's twins, additional modifiers to labour and delivery of course apply for multiple births.
Well, lets come up with the rules for giving birth and pregnancy before we start thinking about how to change them.