Yeah, protein is the name of this game, though, and not getting it in can cause a lot of other complications. Have you tried any of the unflavored powders? Musclegen makes a flavorless one that is highly rated, and very concentrated. You could add that to almost anything: soups, pudding, sugar-free Kool Aid. http://www.amazon.com/Musclegen-Research-Genepro-Protein-Powder/dp/B00K6OSDYA
Read the reviews, a lot of the positive ones sound like people experiencing the same problem.

You can also get a huge chunk of protein from plain greek yogurt. the Fage 2% individual cup contains 22g. This is definitely a serious issue that you need to find a resolution to ASAP. I ended up developing a sensitivity to a whey protein that I was taking. It caused me an hour worth of firey pain after drinking. I switched over to soy protein, and that helped a lot. It still does not taste "good" but it's drinkable. I make it taste better by adding some pressed coffee, and maybe a splash of sugar-free syrup to add some sweetness.

I hope you find something that works soon. Keep this updated.

A lot of the nausea people get is a result of dehydration. Increase your fluid intake. It can also be lactose intolerance, which many people develop post surgery.

Ignore protein if you want, but do so at your own peril. About the least dangerous side effect of getting no protein in will be serious hair loss. The worst will be losing muscle, and your heart is the most important muscle. You really just need to look at water and protein as medicine right now. There are a billion different kinds out there. Try those you mix with water, or broth, coffee, or tea flavors. Some are hot, some cold. You may not like it, but it's what you signed up for. This is food as nutrition, not food as fun. It will get easier as you go along.

I do the same, but it is with Isopure unflavored. I like it in the mango passion fruit flavor of the crystal light drops.

I agree with Loveshoe, I had a hard time with the thicker milk based protein drinks after surgery but I tried the syntrax nectar mix in Fuzzy navel and strawberry kiwi and had no problem getting those down. They mix with water so they are thinner and go down more like a juice. I also used the ready to drink isopure drinks from GNC the flavors take some getting used to but you get a lot of protein in those too. Good luck!

You may want to try Spirutein - it's not whey based. And, you can buy individual serving packets, so you don't need to invest in a big can. It's a little gritty, but taste good mixed with a banana or other fruit and some non-dairy milk.