Serious question lol

Tbh my midwife hasn’t really explained anything that will happen at birth and I don’t remember being taught about bloody shows ect at school which was about 10 years ago! Can you go into labour without a bloody show?? Just wondering .. like can you go into labour without any pre symptoms? Not that I think I am just sitting here with a lot of pressure on my hips, was sick the other night and my tummy has emptied a bit tonight (leave that to your imagination) 💩 feeling really nauseous only 35 weeks ftm .. it just had me thinking like woah what if she decides to turn up tonight!! I am not ready 😂