The problem with this i'protocol" is that you cannot take Doxycycline with another Antibiotic such as Bactrim...as it interferes with the bactiriacidal action of the Bactrim.
I have had this problem as I have had to take Erythromycin for pneumonia and cannot take the Doxy while I take the Erythro.
Anonymous seems to have that right and is going to take the Doxy "after"...not until all of the Bactrim is finished.