Itchiness

So this past week I have been having an itch it’s only in my vaginal area. Everything else is completely normal no pain while peeing there has been white discharge but people said that’s normal but nothing else. I use condoms when having sex the only thing I did differently this last time was I had shower sex. There isn’t anything that would say anything is wrong other than the itch. No weird smell no bumps.... help? Oh if this helps I also went to an amusement park and my friend convinced me to get on a water ride and I didn’t have extra clothes.... could that have caused this?