Oh sweetie, this happened to me TWICE with this last pregnancy. It was the pits. No doubt about it. It's that total catch 22 of do I eat to make myself feel "better" because I'm pregnant, or do I NOT eat because I have the flu and my stomach needs to be empty to heal. I'm guessing that at this point, you just need to get as much as possible DOWN so that your pregnant body can start to be "just" pregnant again. Here are the things that helped me:
Chicken broth or soup (yes, this mostly vegetarian was in combat mode...anything that stays down and has protein is GOOD)...if you can find home made chicken broth (where people brewed the bones in there to get the marrow in the broth) so much the better. Good for protein, not so hideous if it comes back up.
Miso soup--replaces salts and stuff, has protein, doesn't suck coming back up.
Vegetable broth. It's not as high protein, but is still good for salts.
Gatorade--same as veggie broth, but is good for "variety". Ick.
Fruit juice.
Yogurt smoothies (or plain yogurt). Throw in protein powder if you can stomach it.
Do you notice a trend? All things that are "pleasant" if you throw them back up. I hate throwing up chunky things. (Ah the things you learn about yourself when pregnant). I drank as much protein as I could until I hadn't thrown up for a while, and then I tried adding things like eggs that put the protein on quickly to try to get back on my regular pregnant eating schedule.
I think you should go to the doctor if you can't keep stuff down for 24 hours after the flu should be gone...your dh said everyone else was mostly done after 24 hours, yes? So give yourself an extra 12-24 hours to pack stuff in, but if you aren't keeping stuff down you do need to go to the doctor. I had to do that the second time I got the flu 'cause I just COULDN"T keep anything down. Not even brothy protein filled things. And if you can't keep anything down because you have a very empty pregnant belly, you can't get better. And you need to get better to feed your babies!
My doctor prescribed me a "zofran" generic called "Ondansetron 8mg tablet." I had to take two several hours apart before I could keep things down for long enough to get my feet under me. I'm sorry that you're feeling so crummy!!! I hope the chicken broth does it for you, but if not, do go to the doc to help yourself keep stuff down. Just make sure to tell him/her that you're pregnant. I love you! MWUH!
). This morning, I had some eggs and they seem to be staying down too. Oh thank goodness. Hopefully our babies are ok: I definitely wasn't keeping up with my vitamins, baby aspirin, and levothyroxine routine for a couple days. I tried once, but threw them up. Stay strong, little ones! Again, thank you so much for taking the time for such thoughtful responses. Carlyle, thinking of you, sis! 
