Alamak, I understand la your worry, memang scary masa pregnant kalau ada apa-apa sudden macam tu! A few of my mum friends juga pernah panic macam ini, especially at early weeks, tapi sebenarnya batuk biasa mmg tak affect baby sebab baby protected dengan amniotic fluid dan uterus wall yang quite strong. Since you tak ada bleeding dan perut okay after resting, likely fine, tapi sebab you're early in pregnancy and worried, better text your doctor or clinic ja to put your mind at ease, tak payah tunggu appointment, doctors memang encourage calls for things macam ni.