Told of baby?

i was tols by my consultant at 21 weeks he was 90 percent sure it was a girl and if he had to tell the gender it would ber a girl, as he could not see testicles or a , i went for a 3d yeaterday im nearly 25 weeks and the doctor told me it was a girl, but that hey can never say 100 per cent but your having ababy girl. so should i still be weary? they are usually correct arent they well they were with my 2 sons, and my consultant has been a consultant for 25 years