Is it normal for an 18 year old guy to be having wet dreams had 3 in the last 2 weeks?

Yes, it is normal for an 18 year old guy to be having wet dreams. Wet dreams are a normal part of male sexual development and are caused by the body's natural production of hormones. They are usually accompanied by erotic dreams and can occur several times a week or even more frequently. There is no need to be concerned about wet dreams, as they are a normal part of growing up.