So embarrassing...

Basically earlier today after school I met my boyfriend, we haven't done anything more than me wank him off and him fingering me, before anyone saying anything it's not my period my period ended 5 days ago and I'm always regular, Today he fingered me and he went quite rough, rougher than usual, and he doesn't have long nails so it couldn't have been a scratch but he pulled out his finger when I cummed and his finger was covered in blood and I apologised and he washed his hands and he seemed fine but walked off shortly after in disgust, I understand that he was abit shocked but he hasn't messaged me since and I've tried to speak to him but he ignored me...any ideas on how I can make it up to him??