My cat is dragging her on the floor and she has diarrhea that has a greenish color?

I looked through her poop and it didn't have any worms in it i really don't have the money to take her to the vet unless i absolutely have to and her has this leakage going on that is blackish and i pretty sure that is why she is dragging her on the floor so i got it off for her but i just wanna know whats going on is she gonna be ok