Mandy,
You really need to get tested for stds. I am NOT saying you have one, but clearly its stressing you out, so why not just get tested?
Aj
Well.
I'm not a doc and also not a girl. I've took a swab of my discharge some weeks ago and I think that thing is used to detect any bacterias you may have. They've found a bacteria in my penile discharge (thank God it's not an STD). In your case, it might be a fungus. Talk to your doctor about it. Does it feel itchy? Any redness?
See you.