Infection?

Ashly
I think I might have a vaginal infection but I'm not quite sure. I had sex the other day with my boyfriend and things haven't been right since then. There is a little itchy feeling but only on occasion. The discharge is white but is doesn't take that "cottage cheese" appearance and it doesn't have a certain odor. I've done some research and I still don't know what it's from. I've read it could be from pregnancy, so I will take a pregnancy test. I also read that tea tree oil can cure a mild infection. Can anyone help me out? Do you guys think you know what it could be?