Drinking

Okay guys please no rude comments I’m a first time mom so I don’t know... my baby is due the 14th of August and my 21st birthday is the 27th. My mom said when I’m comfortable enough to leave him she will watch him (won’t be on my birthday that’s too soon for me) so I can go out for my birthday. I’m not a huge drinker but would like to have a couple drinks if I’m breast feeding can I even do that?? I do not want to harm my baby so figured I would ask y’all