Im hypoglycemic now what can I eat?

Im so confused the doc said just to make sure Im eating proteins with my carbs......then gives me a paper that tells me whenI have certain symptoms dink juice or hard candy. I read up and understand the protein thing I think, but it seems like a lose lose situation. I dont get enough sugar yet I should eat sugar because then my body will over produce insulin and my sugar will drop dangerously low. SO can I have a stinkin gl of juice or not? I hate this its so depressing - mainly because its so confusing. I go to my endocrinoligst (whom I have for thyroid soon) but my fam doc did the test and I feel so uninformed.....and everythign I read sounds so scary I have fasting hypoglycemia my level was 39.