Dear mothers of two or more children! Tell me how many times you went …

Dear mothers of two or more children! Tell me how many times you went after the signs? I'm at 36 weeks, my belly is pulling down, and today it hurts in my tailbone. I feel like something is low there. And I have this feeling, even though I gave birth to twins at 38, I think 36 is too early ? What do you recommend to delay it? Or bed rest?