Hi Bridget, welcome to PP. I hope you enjoy coming on here and getting to know us all. Everyone is really friendly and supportive.
You don't say how old you are, but you say 'classed' as older parents so I assume that you are in your 30s? If so, that isn't 'old' and I wouldn't worry too much about that. I am 38 weeks pregnant with no. 2 and I am 35 which also comes under 'old' but my blood test results came back as lower risk than with my first and on par with someone in their early 20s.
Giving up alcohol is a good idea, for both of you as it can affect sperm as well, so ask hubbie to do that to up your chances. Not smoking is a good all rounder for a healthy lifestyle as well. Eating a healthy diet, lots of fruit, veg, lean meat, low GI foods such as whole grain bread instead of white and cut right down on refined sugars can work wonders and help you lose weight carefully. A good friend of mine lost 3st and conceived after being told she had no chance due to polycystic ovaries after following a low GI diet for a few months. And above all relax about it. Don't stress if you find that nothing happens for a few months, it won't help and you'd be amazed how much emotions can interfere with the normal running of your body.
Good luck, keep in touch and let us know how you get on. N. xx