Hello and welcome,
The bleeding may be from the depo injection as it may lead to hormonal
and cervical changes that cause post coital bleeding. Other reasons for the bleed may be an infection of the cervix
, or a polyp.
Irregular bleeding is common with depo provera
and may be unrelated to sex. The timing may be a coincidence. So please keep a watch on the bleed for a few more days to see if it does follow a pattern of bleeding after sex. If possible allow a few days without having sex and see if the bleeding remains.
If it is still there, get examined by a gynecologist for cervical lesions and a pap smear
Do not worry. This is typical of provera.
Hope this satisfies your query.
Thanks for using HCM.
Feel free to ask any more questions that you may have.
Dr Madhuri Bagde
Consultant Obstetrician and Gynecologist