i took my first optk last night (a bit early but i went for it). last night it looked negative, however, this morning the line looks pretty dark??? has anyone had this happen? i'm using target's brand of "clear blue easy". according to online calculators, i'm supposed to ovulate sometime b/w the 25th and 29th so it could be right. the dh and i will start the bd tonight and we are going away tomorrow. any info is helpful.