What are the beginning signs of labor?

b

Okay I’m a FTM so I have no idea what I’m looking for when it comes to going into labor. Tonight I am feeling some pressure and tightening. It almost feels like cramping but not quite that intense. I’m also experiencing some sharp pains that go all the way down my crotch and my lower back is feeling achy too. Lastly I sometimes feel like I have to pee, even if I just peed and nothing really comes out. Does any of this mean anything ? I haven’t even lost my mucus plug or anything yet.