usually if a women misses one pill, then we advise her to take two pills on the next day and continue as usual. if she misses 2 or more pills, then the course should be interrupted and an alternative method of contraception
is used. in ur case u only missed one pill, so u did the right thing by taking two pills, hence need not to worry; but make sure that u only missed one pill and not more than that. u also make sure that ur properly following the dosage regime. if u have missed taking pills on two different occasion in the same month then also its advisable to use alternative method.