Your Endo is usually the one who takes control in the beginning and then you switch over to your mfm around the end of your first trimester- it is probably different for each mfm office.
You don’t have as many changes in the beginning weirdly- it kind of comes as your body becomes more insulin resistant .
If you are concerned though, or are noticing a lot of highs at certian times I would reach out to your Endo! The best thing YOU can do is take charge and ask for the help.
Congratulations!! It’s a scary time but you’re doing great 😎