Glad you're getting a blood glucose monitor. When you feel like this again. Test.
Sometimes when your body is used to high blood glucose levels, when it goes down to better levels, you may you feel dizzy and unwell. This is called a "false hypo". Don't try to correct this, your body will get used to being at a better lower level soon.
However if your meter shows your level is below 4.0, that is hypogylcemia, you need to raise the level. Firstly wash your hands and retest (in case there is something on your hands.) If it is still under 4.0, Follow the instructions on this page, (taking a quick acting sugar and retesting after 15 minutes.)
https://www.diabetes.co.uk/how-to/treat-a-hypo.html
Hypogylcemic episodes are a big issue and dangerous for Type 1s (and Type 2s who do take insulin.) Many of them carry glucose tablets with them for this reason.
However, I see from checking you are a Type 2 that doesn't take meds or insulin (like me). Hypos are not a big issue for Type 2s who are diet only and do not descend to the levels of people who take insulin. Try not to worry about them. I only have had 2 mild hypos and a few false hypos at the beginning in the last 3 months since I was diagnosed. Once I got a very low reading (when I felt fine), I retested and it was normal (a faulty test strip.)
Hope this helps.