I just spent the last week playing with two of my grandchildren, an amazing two year old, and an equaly amazing 1 month old. The joy that they bring into the world is unmatched. And so it will be with your newest, when he/she arrives. Enjoy the time when that child is inside you, inspite of the kicks to the diaghram and kidneys. Eat all sorts of differing foods. Your little one will get to taste new flavors through the ambiotic fluids. Sing to him/her. Read to your "little almost". Not only will that precious child learn your voice, but your own love will grow as you interact with your little one.
Congrats from a grandpa who really understands the joys of grandparenting, and of raising children. I, with my DW, raised four, two boys and two girls, and yes, they are amazing as well.
There are those women who choose a career rather than motherhood. I believe they are cheating themselves of the ultimate fullfilment in life. What you can do as a woman is a far greater thing than anything I can do as a man, at least until the child is born. You can nuture a life into the world.
I'm not eating for two and never will again, but I remember eating pretty much anything that wasn't nailed down. I particularly went mental on oranges and tomato juice with my first. Must have needed some vitamin c or something!