I'm sorry you're going through that. I can relate and then some. parasites can cause all those symptoms you mentioned and more! I haven't successfully rid myself of them so take my suggestions with a grain of salt. I hope someone more experienced and successful can answer your questions.
I recommend humaworm from personal experience. It kills parasites over 30 days instead of two weeks like Organic Olivia's method. This helps with die-off symptoms. BUT still, prepare yourself for possible die-off symptoms that a lot of people get when cleansing. It's because when parasites die they release toxins. From all that I've read, the worst of it goes away and usually just happen at the beginning of the cleanse for up to a few days.