don't stop midway through a pack, you might as well get them out the way.
i'm not sure what the 'rules' are for taking the pill continuously, but it does say in the booklet that comes with the pill that there may be spotting during the time you are taking the pill. i'm sure it is working fine, but since it has been a month and a half since your last period, then maybe your body has just decided it wants to let it all out.
i don't know exactly, it's just what i'm guessing.
maybe i will try to run two packs together sometime soon and see what happens.
i'm sure it is working though, if you are taking it then it should be.