The parasites in your blood- I know you are short on cash, but I would be looking for Babesia, a red blood cell parasite. This can be transmitted by ticks and biting insects.
Igenix is an excellent lab, I would call them and speak with Dr. Harris. He will be honest about the best way to identify.
Antibiotics with not be an effective treatment alone for this type of protozoa. Oral Mepron, Artemesian along WITH oral Zithromax seem to be the most common treament.