Dry during intimacy

Ha

I’m 24 female, healthy sexually active with the same person whom I get the pleasure of marrying in next 10 months and I have been experiencing dryness when being intimate any advice? I am turned on and in the mood mentally so i don’t know what’s going on. Then it makes me self conscious and embarrassed. He hasn’t notice or said anything about it. I just feel somethings wrong I’ve never had this before