The best rule of thumb is to treat your body as if it was already pregnant, if possible, for at least a month before undertaking a cycle in order to give it the best chance you can possibly have.

Remember certain toxins and chemicals can stay in your body for weeks and I read that for ova and sperm to completely regenerate themselves after damage from toxins (eg alcohol and nicotine) takes approx 3 months.

The hardest thing I found to give up was caffeine, but then you always have that little voice in the back of your head saying "well if this is going to help me get that long-awaited bub then surely it's worth it!" I have now been caffeine and alcohol free for 8 months and really it's not that bad.

Wishing you good luck