First off, I'm an ex-pat living in the States for 32 years now. Was diagnosed with Type 2 in 2001 and on insulin since 2010, firstly Lantus and now supplemented with Humalog. Since I test more than 5 times a day and inject at least 4 times a day I get Freestyle Libre 2 as part of my medical plan (yeah I know Americans medical plans) . So here's my problem... I started using the CGM yesterday and immediately had a high of 245 (American values) and used Humalog to reduce that to closer to 115 by 10:00pm when I took a small amount of Lantus before bed. Well this morning my blood sugar was 103, I had 5 cream crackers with no butter or jam and a cup of unsweetened tea with a dash of skimmed milk (yeah, I'm a Brit but still remember British terms) and my blood spiked at 256! why?