You can use 95%, btw. Statistically, any % error that is under 5% is considered unusual, and not a random occurance due to chance.
I just feel bad for yall, honestly. It's hard hard work to have a baby, especially on your own, trying to deal with child support payments, working and having a newborn, etc. I'm waiting until after I'm out of grad school to have a baby, even though by then I'll be 30. But for me it's the right thing to do, because I want to be able to support my family even after I'm married, and not just have to rely on my hubby to pay for everything. Plus I think I'd go absolutely bonking mad if I was a housewife, LOL.
The moral is: Anal sex, IA.

It hurts less than giving birth.