Signs of early labor?

I’m 35 weeks and 3 days and I don’t think I’m in labor, but I can’t see myself going very much longer. I am so tired, I have absolutely no energy at all, I hurt everywhere, headaches all day, have lightning crotch like crazy, cramping, every muscle in my body is just tired, I feel like I can’t even get out of bed. I know it sounds like regular pregnancy symptoms but I cannot stress enough just how bad all over I feel. I went past 40 weeks with my first and didn’t even feel like this. Idk how I’m gonna go almost 5 more weeks like this. Of course I want him to be healthy before I have him, and I’ll put up with being miserable, I was just wondering if anyone has experienced this and webt into labor a little early? Like 37-38 weeks. I’m realllyyyy hoping i won’t go past 40 weeks again. Idk if I can take it.