Where has it gone up? Am I missing something? (not unusual for me) I thought you were 7.2, 6.8 and now 6.5.
Also be aware that meters are not accurate. In the UK they only have to be accurate to within plus or minus 15%. You can take several consecutive readings from the same finger, different fingers, or even the same drop of blood, and will get a variety of readings. Sometimes they can vary wildly.
If you want peace of mind, ask your doctor to do a diabetic blood test, either a fasting one or a 3 month average (known as an HbA1c).