Help please,

I'm a 31 year old male who recently came back from Peru after staying there for 2 months. About 3 days after I came back I experienced what felt like a massive immune system crash, it came out of nowhere. The symptoms were hell to say the least, extreme fatigue, crazy anxiety, off and on again diarhea, migraines, insomnia, Depression (only once thank god), passing gas, burping and insomnia These symptoms went on for about 3 weeks because I trusted that the doctors would find something and we could pin point the problem down. After a million blood tests they found I was perfectly healthy, no elevated white blood cell count. I did 3 different stool tests and they all came back negative as well. After doing some research online I found out that the stool tests they typically do are useless anyway, so I decided to seek a herbal parasite cleaner. I decided on Paraway Herbal Cleaner (mostly because it was the first thing I found). When I took it the first day, holy smokes I thought I was going crazy... Mania/Anxiety like I've never experienced before, kept me up the entire night. Ever slowly the symptoms started to get better over time, the dizzyness seems to have gone away lately along with the fatigue and the migraines (sometimes I get the dizzyness when I move too fast). My sleep seems to have gotten better aswell, don't have serious insomnia anymore. The symptoms I still have are anxiety and nervousness (they seem to come and go in intensity), a slight rash on my hand (this bothers me the least), sometimes feeling spaced out (hard to concentrate). My question is, can I be reasonably sure I'm still going through the healing crisis? I'm a little frighteened that I'm going to be permanently like this... I'm sure that's playing a role in my anxiety, but it's not the whole thing (it's hard to explain, the anxiety feels almost biological)...