So I went wacky with my emotions yesterday. How do you help your fiance, boyfriend or whomever that's close that's effected by your crying and mood swings?

My fiance is a sweetheart and he was trying to help me and he was worried about me. I don't want him to think I'm upset about being prego nor about having the wedding sooner. I am so happy and excited but he thinks I'm not happy. Please help so I can help him better understand. This is my first go round.