TTTS is serious. Have multiples of any order is not a low risk. Eating healthy and having good thoughts will not compensate for complications of this sort..
Yes, one should weigh risks and benefits but US is very low risk procedure compared to others. US does not increase risk of cancer like CT>
You are getting advice from books and lay people on the Internet. May be they are right , maybe not. Why not go and see an expert?
No one will force you to do any procedures. Have a consult. Discuss risks and options. Get a second opinion if you wish. Then see what you want to do. If you decide to do nothings, at least you will ready emotionally for what may come.
Intuition is wonder full thing but ti is often wrong. I bought many lottery tickets on that "feeling". Hmm. I am still working 9-5.
TTTS would be rare in my case. Imagine the chances of triplets, then imagine the chances of TTTS in a triplet pregnancy on top of that. Those are two extra layers of statistics I would have to cross. That's a risk of like 0.0005% or something silly like that. Compared to the stress and the bullshit and the truly unknown risks. I don't need to go to a medical person to sell me fear on such slim chances. And U/S is not only unproven, but has been caught on many occasions falsely diagnosing things like club foot, miscarriage, missing a triplet or other high order multiple, even a twin... being wrong about baby weight by up to 2 pounds of variation... etc.