One thing to think about with baby number two is the amount of fats you have in your diet. Fertility is often very related to maternal nutrition as you need enough nutrients for the baby to grow properly and baby number 1 can often deplete this. Make sure you're getting good quality fats in your diet - coconut oil (2+TBSP daily) is a fantastic choice as it is metabolised in a different way to normal fats (i.e. not through bile breakdown), so even people with a compromised digestive system can absorb it. Avocado, oily fish and olive oil are also good choices.
Vitamin D, vitamin A and vitamin K are also increasingly being linked to fertility. Supplementing vitamin D3 (as it's difficult to get enough from food sources or the sun in this country!) and eating organ meats such as liver 1x a week (make sure it's from a good quality source) and green leafy veg, will ensure you're getting these vitamins.
I see a number of women for fertility treatment and combine nutritional advice and Wibble wobble for fertility -
www.revaclinic.com or call/ email for more information if you're interested 0207 589 6414
lucy@revaclinic.com. I can just do a one-off hour and a half consultation for dietary recommendations if that's preferable. I'm based in Thurloe Street, South Kensington.