Whenever i have sex there is a lot of water in my vagina, sometimes it is there when the penis goes in and sometimes it takes a few minutes to come?

What is it?: Does what you described bother you physically? If not, leave it alone. "water" in vagina may be true in you from some urine flowing backward to vagina or indeed a part of semen; it's unclear from what you stated. Does "it takes a few minutes to come" mean reaching orgasm "too slow" for you? That has to be defined. For reality, it's a good idea to see, talk, and work with a professional to detai.