Extended bleeding after stopping bc?

I'm coming off of Mili after about 2 years. I got the usual withdrawal bleed while finishing the inactive pills and I'm usually done after 5-6 days. This time I had minor spotting between Friday and now. After reading some other posts here, I'm nervous about if this is normal and how long it might go on. Anyone have experience with this that can advise/calm my nerves? I just want to know if this is something I need to get checked out or if it'll stop soon.