3 weeks until AF!

Hannah • Twin girls born 6/26/15
This is going to be the longest 3 weeks ever! I want to get pregnant this time because if I don't then we have to wait a couple years! I thought I was pregnant last month because my period was 10 days late and only 3 days long and very light but I kept getting BFNs. Hopefully this month will work out! Anyone else on the same schedule?