Ob-Gyn questions? Ask a gynecologist online.
A period for more than 7 days is not normal.
If your period has continued from 11th September and has not stopped in spite of taking it regularly, you will need a stronger pill. You also need to get an ultrasound to check if you have causes for bleeding like uterine fibroids.
Stopping the pill on the 1st october would cause you to have further withdrawal bleeding.
Please get an ultrasound done and a Obgyn checkup.
Level contains Ethinyl estradiol and levonorgestrel while yaz contains ethinyl estradiol and a progestin called drospirenone. Possibly the first combination has not worked well for you . But many woem go on to adjust to the pill and continue to take Levlen without any problem.
The light bleeding now is due to withdrawal bleeding while the earlier crampy bleeding was due to the effect of progesterone.
I doubt that you will have another month of bleeding once you restart the levlen. But getting an ultrasound before you start it will be the best option.
In some cases, the withdrawal bled stops spontaneously after about 7 days. But sometimes it may continue until a hormonal pill is take. it can also be stopped by taking non-hormonal pills like tranexamic Acid pill but that is also a prescription medicine and you will need to see your doctor for it.