What's going on? :(

So last period was 30th August, on the 13th September I had 1 day of brown/pink spotting and nothing since however today I have milk leaking from both breasts :( my youngest is 7 months old and I haven't breastfed or leaked since he was 2 months old so just wondering what could be going on? Any ideas? I'm really worrying something is wrong :(