Yes, parasites can cause the symptoms you describe.
I would encourage you to trust what your body is telling you over what a test from the laboratory reveals. If your body says something is wrong, then it is important to take measures that will help restore your health. Fortunately, there are many anti-parastical herbs and formulas available for you to choose from. You also need to make sure your body is getting the nutrition it needs to defend itself, which can be challenging in a kingdom where highly processed fast food is the main staple. You will find plenty of ideas on how to begin cleansing and detoxifying your body by reading the posts on this website. Thank you for joining the collective conscious effort to extinguish "The Coming Plague"...