SOS SCARED- bleeding after masterbating??

mady
First time basicslly fingering myself and I was wet and stuff and I looked at my hand and it was bleeding!! Did I pop my cherry? Cut my vagina? What happened??? I'm so scared. I was going hard kinds yeah I guess. But what happened. Great start to masterbating hahaa. Probably won't do that again! 
Also I HAVE to swim in a semi clean pond for work tomorrow. Will my vagina get infected or something??