Hi biologygirl22, welcome to the board!
What symptoms are you having? While it is possible to have Babesiosis alone, many people who have it also have Lyme disease (both are transmitted by ticks). Below is a Lyme symptom list. You can have any combination of symptoms.
When tick-borne diseases are a possibility, it is very important to see a knowledgeable doctor. Many doctors do not understand them and treat with outdated protocols. No test is completley reliable, and results can vary by lab. Besides Babesiosis and Lyme, ticks can also transmit other infections including two types of Ehrlichiosis (HME & HGE), Bartonella, and Mycoplasma. Many people have more than one infection. It may affect treatment choice and progress. It is important to be tested for these by a Lyme reputable lab such as IgeneX in Palo Alto, CA.
If you need a doctor recommendation, you can email me at firstname.lastname@example.org
It is also important to learn as much as possible. I recommend reading Dr. Joseph Burrascano's 2008 Diagnostic Hints and Treatment Guidelines For Lyme and Other Tick Borne lllnesses at http://www.ilads.org/lyme_disease/B_guidelines_12_17_08.pdf He is one of the top Lyme doctors in the country, and many Lyme doctors follow his protocols. He discusses antibiotics and doses starting on page 18. I also recommend the books "Everything You Need To Know about Lyme Disease Second Edition" by Karen Vanderhoof-Forschner and "The Lyme Disease Solution" by Kenneth B. Singleton M.D.
I hope you can get answers soon.