Why don't you also try neem. It is really an excellent herb, really strong and not hard on your liver. The oil you can apply topically (but preferably use neem pills internally). I have taken doxycycline often before and it really made me sick. My liver could not take it. Plus you need more rounds, it is really lethal, in my opinion. Otherwise also try ashwagandha, also an ayurvedic herb, which should help you feel better. But just to be sure, you can check with an ayurvedic doctor. Ayurvedic herbs have completely changed me, from anxiety and insomnia, crawling and lethargy to super energy, great mood and good digestion.
Whatever you decide, get more info on it before taking anything. If you are very weak, someing harsh on your system can make you feel worse.
It may sound banal now, but the anxiety and fear part is more harmful than the infection itself.