First trimester pregnancy

KKH show me that they found out small one in my womb earlier in a&e due to my cramp stomach. Then, my first appt with a gynaecologist in NIH. She said can’t find anything & can’t see them clearly in my womb.. check with me if I got any pain inside or got blood? None of them. So they ask me come in next appt to do scan again.. is it normal for first trimester in NUH?