Trying to conceive

My partner and I are starting the whole TTC process this month, but I'm soo nervous and flit between wanting to and getting worried about it all. The thing is I lost my mum to breast cancer when I was younger, which she got during pregnancy, so this is something that frightens me. I need to stop procrastinating as I am now 38 and can't leave it much longer. Just need some encouragement and advice. Please help :) x