How would YOU describe a contraction?

viby • 24 • mama to one —

I am currently 36+5 and have not experienced any type of contractions until now (I think). I am feeling dull period like cramps in my lower abdomen that kind of radiate towards my backbone, but they are so irregular I don't know if they are BH/contractions or just my body preparing for labor? 🤷🏻‍♀️🤷🏻‍♀️