Test Day

Have been pondering about when to take a test, the packaging says it can be taken up to 4 days before........really dying to know, but do I really want to find out then go rushing off to work and bite my tongue not wanting to tell anyone. Or do I leave it till Saturday morning, and have the whole day ahead of me for spending time with my husband and of course a trip to a baby shop....as soon as I see 2 stripes, I'm off out to buy a pair of booties!