hi! the first response ones are pretty awful! really the best time is the day your period is due (if you have a regular period that is!) if you read the small print on the first response tests you'll see that its only about 25% accurate 4 days before. if you dont have a regular cycle then 4 days after you think your period is due is about 100% for an accurate result.
hope this helps and Good Luck!!!
koala |