I just want to set down the basic guidance for people wanting to conceive naturally.
The woman should establish her cycle and know when she is likely to ovulate. Books will tell you how to do this from the cycle of your body temperature but if your just mildly interested and not fanatical - hey it's somewhere that isn't between PMT and the curse. I mean get those out of the way and for a while you'll feel at your most randy and that's the time to go for.
For the man you should know when your partner is about to ovulate - I mean BE TOLD. You should find this is fairly regularly once every 28 days but it may not be . If your partner's cycle is not regular then as I say body temperature is the simplest accurate guide.
Given that you know when your partner is likely to ovulate, four days before have yourself a frenzy of ejaculation - flush out all your past it sperm into a condom for preference but absolutely not into the prospective mother.
Then don't ejaculate - for any reason - for those four days and you'll be loaded up with a full dose of prime sperm charged semen.
Go for it . Give her both barrels and then leave her alone for a week. She should be pregnant.