Signs labor is approaching?

38w6d since yesterday morning I've been losing my mucus plug in little chunks and last night I could barely sleep because if the constant feeling that I needed to use the bathroom 💩 but by the time I get to the bathroom the feeling kind of goes away and I can only pee my mom has been saying that this is what labor felt like for her when she was pregnant with me (only natural birth, she was induced with my siblings) I don't know what to think 🤔😬

Update: now having backache that comes and goes 😢