T.S.
The more you do it the less you'll notice the regrowth. It also depends on what you were doing about your bikini line before hand. It's likely that the hairs you see growing in now actually weren't there when you had it waxed so they are just coming in now. Either that or a few hairs may have broken off instead of being pulled out. You might just try plucking them as they come in over the next couple of days. You'll likely find they almost fall out when you tug them.
You might actually be doing too much to prevent bumps and causing some irritation. Gently scrubbing in the shower with a washcloth and then a soothing antibacterial ointment after should do the trick (tea tree oil is good, or just neosporin or a burn ointment with a pain reliever in it is good).
Good luck.
T.