Wa'alaikumsalam sayang! Ahhh ini memang boleh jadi Braxton Hicks (false contractions) yang common dekat trimester ketiga, tapi since you're only 33 weeks, better check with your doctor or go to the clinic soon okay , just to make sure everything's okay with you and baby, especially kalau the pain terasa strong or frequent sangat. A few of my mum friends had this around that time and doktor boleh check properly, don't worry, usually okay lang, tapi better safe than sorry! Rest morebit, drink plenty of water. Jangan tinggal je macam tu, get it checked tau!