Sayang, perut megeras lepas hubungan intimate tu boleh normal je kalau sekali-sekala, tapi kalau kerap or terik sangat sampai takut, better check with your gynae to make sure semuanya okay, a few of my mum friends also experienced this and their doctors said it bolehlah, tapi some cases kena monitor jugak depending on situation. Kalau ada bleeding or other symptoms lagi, jangan delay, better safe than sorry kan, especially if you're trying to conceive or pregnant.