Hmm, sakit payudara dan perut macam bengkak memang bisa sign awal period atau ada yang lain, tapi since dah delay 8 hari I think better check with your doctor or do a pregnancy test dulu sebab symptoms macam overlapping je. A few of my mum friends pun pernah confused between PMS and early pregnancy signs sebab rasa sangat similar, payudara tender, bloated, semua sama. Go see your gynae or at least do a test kit from pharmacy, okay? Don't worry lah, at least you'll know what's happening then boleh relax.