Sorry -- I wasn't around when you posted. I was at the airport and didn't have the laptop out.
A couple of thoughts... Since this is not a typical number for Baby, re-testing can help to make sure this wasn't a wonky test, meter error, bad strip, enough/too much blood etc. I also want to encourage you to get tests during the PM cycle. If numbers were coming down, you would have had more of a warning if you'd gotten tests last night.
Also, people really want to know what happened. Could you update your SS?
Karrie -
Antibiotics don't lower BG. However, because an infection raises BG levels due to the stress on the system, when the ABs kick in and start to work, often BG levels drop. (It's the same principle with a dental -- gingivitis raises the BG level and once that's gone, levels can come back down.)