Eh, at 8 weeks perut keras tu quite normal actually, a lot of mums experience it, especially kalau terlalu active atau stress sikit. It's usually just your uterus stretching and doing practice contractions (some call it Braxton Hicks, tapi at this early stage biasanya just ligament stretching). As long as takda bleeding, severe pain, atau spotting, usually okay je, tapi memang worth mentioning to your doctor at your next checkup just to be sure and get peace of mind, eh? Take it easy, rest when you can, and drink plenty of water.