This isn't related to pregnancy but I need someone to look at my hand!!

I've been on this app for a while tracking my periods and fertile days. 3 days ago I was sweeping the floor and after I was done a few minutes later my hand just started hurting and I looked and between my two fingers it was like it blistered and popped. It's more painful than it looks,it's very painful for me to fully open my hand and fully close. I wanted to post this because a lot of mothers here clean,and even men too but there's mostly ladies on this lol. This morning green stuff is around it and you can tell it came out last night because it's dried up.