I've been having contractions 3-4 minutes apart for the past three days straight now. I got the…

I've been having contractions 3-4 minutes apart for the past three days straight now. I got the terbutaline shot yesterday and had one at 34 weeks. I was checked and my cervix is high and closed. Does anyone know why I'm having contractions then? Does this mean my labor is near? I wasn't dehydrated nor running a fever. I was just told I wasn't in active labor and that's why they stopped them. But I'm still confused as to why my body is doing this.