What sex do you think the baby is?

I had an ultrasound today when i saw my ob and he said i am week further a long that i thought (17 weeks). He couldnt quite tell the sex but said he was 80% sure he knew but would rather be 90% sure before he told us. Do you think that means it was more likely a boy or a girl? Just curious......i will love it either way i want to know but i dont. By Boo Boo