Just found out I have GD! Need to know few things please help!!!

Javayria

So I found out today that I have gestational diabetes I had a 3 hours test yesterday and I was in complete shock when the doc called me today to inform so anyways fast forward I did home tests today twice, 1 hour after meal which came 125 and 2 hours after meal came out 112.. both of them pretty normal! my husband keep saying that the result that they told you is not right because we ate guac with lots of tostitos chips 8 hours before the test and chips have lots of carbs but I don’t think it triggered my sugar levels.. our doc didn’t warn us to what to eat and what not to before the test which sucks!!can you guys help me do you think I need to go do another test if that’s the case or what do you suggest if I keep having result under normal range ?