i need advice

I'm not on my period I have to been on it since the 1st of October...my normal I'm getting a ultrasound on my pelvis on the 9th to see why my periods are so mest up but that's not why I'm here I'm here to ask if anyone else gets alot of this white discharge when not on your periods...it's annoying I also ask if anyone knows why the top of my vagina where the clit is is itchy I'm not having sex I'm still a virgin and I don't understand half of this shit