Should I Stop Taking Diane And Continue Taking Althea Again To Overcome Persistent Bleeding?

hi.. i was given DMPA contraceptive last june 12, 2018.. and my menstruation hasn t stopped since then.. My OB recommended althea pills to stop the bleeding.. and it worked.. i stopped taking althea coz it made my skin dry so I started using diane 35 pills.. and the bleeding started again.. should i stop taking diane and continue taking althea again? and until when is the irregularity of my menstruation due to DMPA contaceptive?