Miscarried but still lactating?

Just a little background but I had my son December of last year, then in June this summer I didn’t even know I was pregnant but had a miscarriage while I was at work one day. This miscarriage wasn’t my first, I also had one back in the end of 2018 (2 months along). After I had my son a few months later I stopped lactating since I wasn’t breast feeding him. I must’ve gotten pregnant sometime in May because the doctor said I was most likely only a few weeks along. But in that time I did notice a little bit of milk coming out which I thought was weird, I was supposed to be dried up. I was still passing pieces for literally months after the miscarriage and was spotting every single day until one day a big piece passed then the bleeding stopped completely. I’ve already had 2 normal periods since then but my milk still won’t stop coming out. I was wondering if any other women had a similar experience. I only have 1 child so I’m not too experienced with this but I would like to stop lactating.