Well you know they do say that babies can see ghosts so just wait till the baby comes and see if he/she ever starts freaking out LOL
It shouldn't have an effect on the baby if you are 2wks pregnant or less. The baby's brain and other organs begin developing around the 3rd week of pregnancy. No amount of alcohol is proven safe though, so you should stop drinking now if you think you're pregnant, just to be on the safe side.