Next monday😓😓😓

oct 10 i find out what im having super scared. I want a boy but i will be happy if its a girl. It fiels like its a long way nervs are crazy. My husband wants a boy and he doesnt know of my appoitment because im scared of any dissapoitment🙁🙁 am i wrong by not telling him? by the way its baby num 3 with 1 boy and 1 girl