It certainly can be, I looked it up a few months ago. I found stories from women who it turned out were pregnant describing severe, constant hunger, even just after a meal. But...
I was looking this up because I was experiencing myself. I was so hungry all the time, I even had to get up for a midnight snack one night because I couldn't sleep. I was convinced it was my month, but AF showed up right on time. Might have been a near miss, but obviously it can happen without you getting a bfp.
I really hope you get your bfp, but I just wanted to let you know that it might not happen.
