Labor

I'm a little worried I won't know I'm in labor until it's far along. I'm 33 + 4 right now, and have been so so lucky in that this has been the easiest pregnancy ever. I haven't thrown up once, no heartburn, I wake up once a night to pee and sleep well besides that, no back pain, no Braxton hicks, etc etc. but because I haven't really even had one twinge of pain or discomfort, I'm slightly worried I won't know when I'm in labor, and don't want to be one of those women who has a baby on a toilet at home on accident!! I know it sounds crazy, but I just have no clue what a contraction will feel like. Thoughts?