Girls, my belly has been tense all day yesterday and today, I feel like…

Girls, my belly has been tense all day yesterday and today, I feel like it's letting go when I fall asleep, but I'm getting sleepy during the day, I feel a strong pull in my lower abdomen, it's probably almost time to give birth, tomorrow will be exactly 39 weeks. I'm keeping track of my discharge, maybe the plug will recede, but not yet With the first births, the plug went away, after 12 hours of water and then 6 hours of labor. What are your feelings at 39 weeks? I just have this feeling that I don't have the strength and there is a strange pain... Will I manage?