Help 😢 What’s happening to me?

I’m 16 weeks pregnant:

For the last few weeks, I’ve had random spells of feeling like I’m going to pass out and my vision goes dark. It’s always when I’m going to cook dinner or early in the mornings making breakfast. When this happened, I had ate about 1 hour .5 before and even had a handful of gummy bears. Whenever I have these spells, I have to lay down wherever I am, I’m fine a couple of minutes later and i always drink some juice or sprite after. Is it just me needing to eat more or do you think I should go to the doctor to get my sugar checked?