Is this something I should be immediately worry about or am I fine to just bring it up with my doctor on Tuesday? I thought I just had a yeast infection so I was just going to wait, but if this is a yeast infection, it's the worse one I've ever had. I am prone to them before pregnancy, and my discharge has been a little yellow lately (why I thought yeast infection) and I'm itchy, but it's now green/grey! Should I see a doctor asap??