How many calories per day in the third trimester?

Brittany
Have you been advised by your doctor on how many calories you should be eating per day in the third trimester? I'm finding anywhere between 1,600 and 2,400 calories as answers when I research so its been a bit confusing. I will be asking for advice at my next prenatal appointment, of course, but until then I was hoping you all might help me out. TIA!