Best time to take a pregnancy test

Angie • Married have a daughter who was born on 12/12/12, now pregnant with baby #2!! :D
My hubby and I are TTC  baby #2. Been trying for a couple mths with no luck. My period is due in a couple of weeks wondering when is the best time to take a pregnancy test. Took one this morning and it was negative. Also any advise will be helpful hoping to get pregnant as soon as we can :) ty ladies