Low blood sugar 20 weeks

The past 3 days I haven’t been feeling right I also haven’t been eating much as I normally do since I have a head cold. In the mornings or throughout the day I get really warm and feel faint until I eat and drink enough. Today was my first day of work and I almost passed out even though I had a burrito and a Reese cup and then had to drink a bottle of Gatorade to feel better. Is this something I should discuss with my OB? I also had a glucose test and passed it recently