Just found out I’m pregnant after a boozy weekend

I have just done a positive test after a weekend away with the girls that involved a lot of bubbles and wine, some spirits and mixers.

I did a test last Wednesday that came back negative so i thought we hadn’t conceived this month, so let my hair down, but when my period still didn’t arrive I did a test when I got home.

Anyone else done this? I am a natural worrier so obviously panicking, I am at most 4 weeks from the date of conception. Thanks