Thanks for the query.
After stopping the pills usually withdrawal bleeding occurs.
You may be having breakthrough bleeding
prior to that.
Possibly this bleeding will subside soon and no need to worry.
If the bleeding continues for one more week, better to consult gynecologist once and take tablets to control the bleeding.
As you are having problems with pills, you can choose other alternatives like depo injections or intrauterine devices.
If you do not want to use hormones related methods, you can go for barrier method or natural methods.