I am sorry to hear about your illness after the last flush . However, we must keep in mind that every flush is different.
One thing you can do to feel better after the flush is to reduce the amount of oil + juice you normally take.
I weigh about 170 pounds and I take 200ml of Olive oil. After several flushes I realized that that was the right amount for me. More than that made me feel bad after and less would not make the flush work properly.
I am not sure the parasite cleanse will really work as I believe your situation call for a live flush right away, even though I understand you are a bit afraid of facing it again.