I have read that untreated BV has been linked to cervicitis which can then turn into
PID. After everything I have read, you only got treated
for chlamydia. Usually, if they test you for gonorrhea, you are tested for chlamydia as well because it is not uncommon to have both at the same time. But doxycycline does not treat gonorrhea nor BV. That it is treatment for chlamydia.
Did you go to a gynecologist or a general practioner?