Before you are either 6 or 8 weeks pregnant (I can't remember which one it is lol) the cells reproduce themselves, and anything you may have damaged would reproduce the proper things needed so I wouldn't worry at all if I were you!
I Was Like That.
I Had Been Out (Not Knowing I Was 4Wk Pg) And Partied.
A Week Later I Found Out.
And Started Worrying Just Like You.
But I Think Drinking Can Harm Your Baby If Your An Alcoholic And Your Always Drinking.
Don't Worry Hun x x x