Help understanding EgeneX Babesiosis test

I was diagnosed with Lyme in 2013 (IgeneX test) and treated with Doxy + supplements. At that time I was not tested for any co-infections. Recently my new Dr. had me redo the IgeneX test with co-infections. My Lyme came back negative, but Babesiosis B. duncani EFA - IgG was 40. In my limited research it seems that 40 may or may not indicate an active infection, but does that mean I have had Babesia in the past? My Dr. is treating with Doxy (200 mg / 2x day) and Zithro (500 mg / 1x per day). I've started taking the Zithro 2x now over the last 7 weeks. Each time I start the Zithro after after 7 - 9 days I get terrible intestinal cramps, nausea, and loose stools and the Dr. has me quit. I have another appt. in 2 weeks to go over my meds. I'm just wondering if "40" on the Babesiosis really warrants doing these heavy doses of antibiotics. I'm also taking 2 meds for yeast infections. I feel so much worse on the meds than before I began - even with Detox (glutathione & Pekana detox kit).

Forgot to add that Dr. did say that we would start an anti-protazoa (Alenia? - not sure of the spelling). He was checking with my insurance, but I haven't heard anything. What is that going to do to me? I'm feeling hesitant after my experience with Zithro.

What kind of symptoms do you have? babesia can cause a range of symptoms. I always liked this overview of babesia symptoms: https://conniestrasheim.org/blog/2017/3/6/a-deep-look-at-the-symptoms-of-six-major-lyme-related-infections

Sometimes people don't realize they have babesia until they take antiprotozoals/parasitics which draws out those symptoms (via herx) and helps confirm the underlying infection.

Alinia is a good med. Some people have strong responses, others tolerate it just fine. If you have issues with those treatments you might want to consider trying herbal babesia treatments, those can be easier on the gut.

Sebreg and Girlie - Thanks for your responses and the list of co-infection symptoms. In the spring I had lots of drenching night sweats and couldn't sleep longer than 2 hrs at a time. Currently the night sweats are gone but I still wake every 3-4 hrs. I also have bad brain fog and a lot of rib pain. My Dr. was supposed to get back to me by the end of Nov. about the Alinia, but I haven't heard anything. I'm going to go contact them right now. Will be interesting if the Alinia makes a big difference - soooo tired of the brain mush!