I also have just completed my first flush ( successful) and had terrible squirtsfrom taking the ES but at least it cleared me out and there was only stones and bile etc. and not all the other smelly stuff! (if you know what I mean)
ES are very useful as they open the bile ducts allowing the bile to expell any stones. It is a matter of preference as to how much ES you take - I find two level tea sps in a glass of water are ok although some other methods say more. We are all different and what works for one person might not be good for another - if you suffer from constipation, you could probably use more but, if like me who tends to be loose, use less. Many "flushers " do not use ES at all and you will get information from them aswell. Read as much as you can from this information which will be given and go with your gut instincts.