I’m scared can someone help

Zyia

I’m 13 and I felt really horny and I just started my period 3 months ago and it just ended 4 days again well I started to masterbate for the first time I can squirt yayyyy but anyway I was doing that a after I finished I saw a little bit of blood but I think it’s because of my nails because there like long but not to long and there kinda square am I’m okay I’m just really worried.