I'm confused!

Ok, so last night I showered like normal and afterwards, I masturbated. I used spit as lube, had a clitoral orgasm, and afterwards I did clean myself off. This morning I woke up, got dressed, and after little bit, went to the bathroom. On the way to the bathroom I instantly felt something wet down there. After I was on the toilet I looked and there was a good amount of discharge. It was abd is white right now btw. I was a little freaked out and confused. I thought about wearing a panty liner, but since I had dark underwear on, I decided not to so I could check out how bad it was later. Today I have made so much. More than normal. I am a little scared and confused. Also, it doesn't really smell different, and I'm not itchy. Help.

Also I'm only 13 and only have had 1 period. I am due to get it in 9 days (the 18th), but I dont think I've ovulated before because I've never had clear discharge, at least during my cycle.

Anyway hope someone can help.