Your symptoms are my symptoms are others symptoms. They can be manifestations of anything but certainly our bodily organs trying to communicate with us, and thank God He creates them similar among different races regardless☺️.
Other experts may give you better answers, but here is what I gathered and learned myself:
1. I jumped into the Liver-Flush wagon without parasite cleanse, produced stones though. But looking back, I believe its wise to parasite cleanse first to be on the safe side, you really would want a successful Liver-Flush because of its excruciating nature you must bear. After all, The Liver-Flush designers know better than us😊. Have you watched videos on ropeworms, Tapeworms and other wormies stuffs?
2. Yes, Andreas did say that in his book. You can also do half lemon juice with half orange juice.
3. Its always advisable to eat easily digestible food post flush. Why? Your body needs time to recover from such surgery-like purge, esp in the presence of ES. And you may as well be depleted of bile to aid your first digestion, so you need to be gentle and slow. I did learn the hard way.
4. Yes and no. Quite blatantly, you need to try and err. Its very unique and personal. Only God knows the answer. So, arm yourself with more readings n askings, here or elsewhere.