Late period

I'm 12 days late now and come off my pill as me and partner are actually trying for a baby But happened last month to where I was 7weeks late then I came on late as the doctor said its because I'd just stopped taking this pill but this time I'm 12days late and don't want to get hopes up if I'm not what's the best and quickest way to get pregnant we've been trying for 3 months now :(