Oh sayang, jangan risau sangat dulu, perut rasa keras sekejap lepas bersama tu memang boleh jadi, tapi kalau rasa tak selesa atau berterusan, elok sangat berjumpa dengan doktor atau bidan untuk check, just to be safe. They will be able to explain better based on your situation, especially if you are pregnant or have any other concerns. Take care of yourself, okay, and please don't hesitate to seek professional advice, your health and peace of mind are so important.