FTM and labour

P

So I'm 39 weeks today as if yet no symptoms of labour at all, but I've never even actually had period pains so my question is will I just know when I get a contraction? Do they start off super painful and easy to time ? Or is it like a braxton hicks kind of pain? I just wanna know what to be on the look out for, I have no idea at all. I'm just preparing myself for the worst pain I've ever felt and honestly I'm not scared, i probably will be when it does start but at the moment I'm just remaining super calm and enjoying the time I have left being pregnant and feeling my rainbow roll around although I am dying to meet him