Could have been a wrong reading. Could have been the alcohol. Probably a little of everything. There is a reason they do a number of readings and go off of trends and not a single number. I wouldn't worry too much about the one number but like Megan said, if you notice a certain food doesn't agree with you (especially at a specific time of day) that is something to take note of.
I'm on insulin for the fasting numbers, so I'm supposed to get more carbs for breakfast than before. My numbers are usually 92-95 after breakfast with the carb, so that's why it surprised me. I'll definitely keep an eye, but thinking it was a wrong reading as 15min was much lower.
And definitely drinking tons of water when it happens. Thankfully not often
Personally wouldn’t go with the above advice for the safety of your unborn baby. Could have been the alcohol in the hand sanitizer but also I know I could never touch carbs in the morning without it shooting my numbers up. Possibly a wrong reading but nothing you can do now. Plenty of water and a walk always helped when I got a high reading x