Aiyoh, perut panas tapi suhu normal tu memang common dalam early pregnancy, hormones naik-naik, jadi badan terasa panas je especially kat perut area, tak pe lagi sebab anak pertama mesti nervous sikit kan. A few of my mum friends experienced the same thing during their first trimester, so you're not alone! Try pakai light, breathable clothes and stay hydrated, tapi since this is your first pregnancy and you're a bit worried, best lo check with your doctor or midwife just to be sure everything's fine, they'll give you peace of mind jugak. Congratulations on your pregnancy, mama!