Whitey-yellow discharge?

Please no silly answers, this is a serious problem that has been going on for a couple of months now. My vagina has been leaking a whitey-yellow discharge for a while now, non-stop and it's getting annoying. I've had to wear pads to keep this discharge from going in my pants! Any solutions or past experience? It's really starting to annoy me, and the other day I had just had a shower and my boyfriend went down on me, and it was back within a few minutes! It's being a major problem for me and i've had enough! (I know it's not an STI because i've only ever had sex with one guy, and he's been a virgin too).