I'll Start With History Of My Problem. 5 Days Ago

i'll start with history of my problem. 5 days ago i got my nexplanon birth control out and right after got the depo shot. it was planned parenthood so they always insist on testing for sti's. i got the test but no results yet. i was cared because i have aniexty. i did not have any discharge until that day. i'm very stressed. i went to the ER and they tested me too and gave me azithromycin and ceftriaxone just in case. since then i have had a lot of white discharge. it was thick at first but now it's more thin but there's a lot. i was wondering if that means i am positive? or if that is a side effect of the birth control and/or the medicine?