Post your symptoms on the Lyme forum. Many people do not react well to Doxy and can be helpful there. Two weeks is likely not long enough to knock out Lyme, plus you still need the neurotoxins (waste products of the spirochetes) addressed.
As for candida, you need to find a loosener (biofilm detox) like boluoke or bromelain, and rotate 3-4 antifungals (like garlic, goldenseal, pau d'arco, caprylic acid) so the candida doesn't develop immunity (it will develop immunity if exposed to the same antifungal for 21 consecutive days). While on the antifungals, do the candida diet to weaken it. Diet alone won't kill it. After 3-4 weeks of this, start on a good pro-biotic to recolonize the walls of the gut with good bacteria. If you start on the probiotic before the candida is gone, it cannot populate the gut walls because the candida is in the way. Slowly begin adding in foods over several weeks' time--small amounts of fruits, then grains, then dairy, and eventually back to normal.