YES.... this is a normal reaction that takes place in the female body during sexual intercourse and it is so normal that it has been given a name "Female Ejaculation" - fluid released by the female body prior to or during an orgasm.... some females state that their orgasm are more intense when this normal bodily function occurs, other females do not like the feeling.
I my self just go with the flow when it happens as it seems to arouse my husband - so why not enjoy it.