Accidently drank alcohol 😢

I had a working breakfast today, they didn't have decaf coffee so I decided to have a tonic instead (we go to this place often and often have plain tonics). Drank it then had breakfast and it wasn't until I paid the bill and saw Gin & Tonic and I questioned it. The barman confirmed it was a gin and tonic I had to start, then a plain tonic a little bit later. I was shocked and upset that I hadn't noticed. But I was focusing on my work, it was 8am and I was in my work uniform!! I am 7 weeks pregnant and feel really upset and stressed about it. I googled it and it made me feel worse. I don't know if posting here will make me feel worse or reassure me but I can't stop thinking about it! 😭