Talk to Gynecologist on Continuously Bleeding

I am mother of 2 child..my last child is 2 months old..I get familia injection as contraception after 41 days of my baby birth..but after some days of these injection I am continuously bleeding for 7 days.. bleeding is not that much heavy like periods..it comes suddenly like once or two time a day..I think my hormones got disturb due to injection.. Plz suggest me a medicine which can set my bleeding..bcz that time I can't go to hospital for a complete checkup..