Relax lah, completely normal! A few of my mum friends didn't feel anything obvious either during early pregnancy, especially if the implantation happened smoothly, setiap orang lain je pengalaman, tak semua ada cramping or bleeding. Kalau otherwise you're feeling okay and your period is late, that's your sign lah, jangan stress tunggu sakit pulak hehe, but if you're worried, better do a test or check with your doctor to confirm, just to be sure everything is progressing well