yeast infection or???

Allie

So my vagina has been kinda itchy for the past couple days but it's just when I'm not doing anything. And tonight I noticed some white clumps discharge, it doesn't have a smell or anything though, so I don't think it's a yeast infection. just don't know what else it could be. I'm supposed to start my period in 2 days and just started on birth control the beginning of this month. so maybe hormones?