Doxy can be used for a number of infections, including Lyme, Anaplasmosis, Ehrlichia and RMSF - not to mention other types of infections it could be hitting.
I would encourage you to start doing a lot more for your detoxing though. Read through this list and see what else you can add, we need to 'engage' many of our eliminatory organs - kidneys, liver, skin, intestines....
Not everyone needs to do the kind of detoxing I do, but here is my list so you can get an idea of the kinds of things that you may need:
It took a lot of diet changes as things with my body changed,
I use a foot soak,
dry skin brushing,
making sure my bowels moved at least once a day (sorry if it's TMI!)
pushing myself to drink at least 64 ounces of lemon water each and every day,
liver/gall bladder flushes (all natural), as needed,
oil pulling with tea tree oil,
taking activated charcoal, as needed,
Alpha lipoic acid,
Quercetin,
turmeric,
Methyl B-12 and methyl folate,
Dandelion tincture,
red root tincture,
Yogi brand detox tea (original flavor)
Have added cytokine remodulators - Chinese Skullcap and Red clover extracts
and keeping the amount of stress in my life at a bare minimum.
I have used apple cider vinegar to help with detoxing as well - it's really good, but started making my stomach issues worse, so I stopped using it daily and only use it occasionally when I know I need a boost in my detoxing for just a day or two.
You can find some really good detoxing suggestions in the "New to Lyme?" thread that sits at the top of the forum. And this is another really good resource for detoxing ideas for Lyme patients:
www.tiredoflyme.com/detox-methods.html But, there is such a thing as over detoxing. This happens when we move more toxins than our body is capable of processing out effectively. Many toxins are stored in our tissues, and by detoxing, we move them to the bloodstream where we can process them out of our bodies through the lymph system, then on to the liver and kidneys as so on. We have to be sure to add in more detoxing routines slowly and carefully, or we will end up herxing just like we had never been detoxing. This article helps to explain that some:
www.tiredoflyme.com/4-reasons-why-you-still-feel-bad-despite-detoxing.html