Alcohol 1st trimester before BFP! Help!

So I am freaking out. I drank alcohol regularly (approximately 1-2 glasses of wine a night) and one binge night at around 4 weeks for a friend's birthday before I found out I was pregnant after I missed my period. I have been reading that horrible damage can happen to the developing embryo that early as alcohol affects how the genes are expressed and this results in problems when the cells dividing leading to cognitive impairment, learning disabilities, and facial deformities. Has anyone here drank a fair amount in early pregnancy and their child ended being ok?! I need some reassurance, panicking over here!