did you have labor signs before having your 2nd?

I had my first at 37 weeks exactly. I had diarrhea for a week and then my water broke and contractions started right away. I'm currently 37+5 with my second baby, but I am not having any of the same signs. I guess I lost some mucus plug over the weekend (still losing in bits), and I have been irritable, but other than that I feel like the end is nowhere in sight. Did you have any signs beforehand, or did you just go into labor one day? I don't know what it's like to go into labor without my water breaking so I'm nervous about that too. Whether it's contraction pain or just gas...