I'm On The Depo Shot Well, My Due For My

I'm on the depo shot well, my due for my depo shot and I have mucus plug once and while when I wipe.. Is that normal? Because I already have two kids and I love them so much. My oldest and 2 and my youngest will be 7 months this Saturday. And I'm honestly not ready to have another baby. I haven't taken a pregnancy test. And I don't want too because I'm scared of the results so I figure I would ask before I buy one.