I didn't know I have been pregnant for one month (to be exact, the last time I had sex with my husband was about 40 days ago). Just a few days ago, I found my menstruation stoped and after medical checking I found I am pregnant. However, due to non-awareness of it, in the past month, I had alcohol consumption, but only once. The amount of alcohol is about 400ml Chinese white wine (concentration ～= 40%).
I searched a lot on the Internet these days about the risk to the fetus. Many webpages told that there will be more or less risk to the fetus, including physical and mental defects. For example, as this webpage says:
When you drink, alcohol passes from your blood through placenta to a baby and can stunt fetal growth, facial deformities, damage neurons and brain structures which can result in intellectual disability and also cause other physical damage.
However, I don't know whether it is applied to a fetus so early after pregnancy, such as my case only one month. As I understand, currently the "fetus" may still be simple cells.
Could anyone tell me the risk? I am so afraid now.