Why am I producing milk?

Fig • ♡ wade's punk mumma ♡ bunny wife ♡ queer and poly ♡

I had my son 19 months ago and weaned him around 15 1/2 months to 16 months. I was all dried up. My husband gave em a squeeze last week and milk shot out of one. It's been producing for a week now and now the other one is too. Amy ideas? I'm on the mini pill, Lamictal, Effoxer, and Buspar.