a week of anti-parasitic herbs is not long enough to have an impact, if infact the herbs will effect your parasites...sometimes they may not, but you won't know from a week of use, that's too short a course...time line is months (often done in rounds) also, if there's a significant infection, likely stronger doses are needed.
but it's not easy to get rid of these things, I know what you mean. I've also had that feeling of whatever I'm taking to kill them, they are rather enjoying more than anything,..like pumpkin seeds, my parasites seemed to love those.
be careful self medicating with drugs, it does carry risk.