What does contraction feels like

Hi mummies, im gg to be 39w but yet to feel any kind of contraction. what does contraction feels like. Heard that it’s like period pain but do you only feel it at your lower tummy like normal period or the whole belly? And does your tummy feel hard during contraction like during braxton hicks? Does your vagina also feel sore like during period or it only affects the tummy ? #FTM