GETTING MARRIED

So my fiance and I have been engaged since 2014 and are finally getting married October 31st. We have been ttc since we had a miscarriage back in 2013. My af is due to start tomorrow and I'm *crossing fingers* hoping that it doesnt come. So if I dont start when should I test? I want a baby so bad and I think my fiance will be the most amazing father. We have no kids yet so we are so ready for our first I'm 31 and he is 34 and I feel like our time is now. I just lost my sister 2 months ago to cancer and I need some positive in my life. She wanted me to do 2 things, get married, have a wedding that our family can attend. Which we are doing, and then have kids, which I am trying for. She would of been the best auntie but at least now I have her watching over me. So when I read this app and all the posts of people being pregnant and or it's my number 4 I get discouraged and sad.