Did anyone feel different before labour?

So these past few days I've been so uncomfortable, I have had bad lower back pain that kind of comes on stronger and then fades but is always there, I've tried different positions, massages and cracking but nothing, about 4 days ago my body just had a big clear out and again this morning but I just thought it was the norm, yesterday my nipples were leaking a lot and they're sore and full, I'm also waddling like a duck around the house and I'm only 36 weeks, the waddle came on two days ago but it seems to be getting worse and I've had bh contractions and shooting pains yesterday I'm also feeling pressure on the pelvis and bum so it keeps pushing wind out and it's really embarrassing! Did anyone experience anything like this before labour or have any other experiences you'd like to share? Xo