Braxton Hicks or real contractions?

You’d think I’d know this since it’s my third baby, but I’m 34 weeks tomorrow and for the past few days my Braxton Hicks have went from painless and very few to more frequently accompanied by cramping in my uterus and throughout my lower back, as well as the rectal pressure gets so intense during them! Are these considered “normal” practice contractions or could they be real?🤔 I never felt contractions with my first child and with my second the contractions didn’t come until my water was broke, so I’m kinda clueless right now! Any advice would be appreciated!😊