A good diet - lots of fresh fruit and veg, including green leafy veg, protein (lean meat/fish/tofu) grains, pulses, try to avoid saturated fats, etc. Omega 3 intake is important: you'll find this in oily fish such as salmon, mackerel, but try to eat just 2 portions per week.
Avoid smoking, try to avoid alcohol and other drugs (recreational/pharmaceutical) after you've ovulated.
Same sort of thing applies to your partner, too - well, except the stuff about avoiding stuff after ovulation! Good luck
Hi there I'm going to be ttc #3 at the end of April but, as I didn't plan the first two, I'm not really sure what I'm supposed to do in advance other than folic acid. Any ideas? What are/have you done in preparation? Thanks