question about nexaplexon

I have had a light period for 23 days straight. I have the implant birth control. I was told that a long lasting period was possible with nexaplexon but I hadn't had this issue until I was hospitalized for gallbladder issues they had me on slot of strong antibiotics starts my period in. the hospital but I'm concerned that it hasn't gone away yet? should I be worried or do you think it's still all the meds leaving my system? Or just the bc it's self?