Is this normal??

I gave birth to my son 5 months ago at 22 weeks. He passed away 2 hours after birth but I’m still producing milk is that normal? When I first had him I tried pumping my breast because they were so swore and big full of milk but then I realized I started producing more milk so then I stopped pumping to try to get the milk to reduce. It has reduced from then but since last month I realize the production of my milk is starting to increase again. My clothes are full of milk stains. Is it normal to still be producing milk even tho I’ve never breastfed. I’m not pregnant. What can I do to stop the milk production?