Hello there, never posted on here before but I'm very worried so yeah ;_;

I'm 21, a virgin female, if that's any help but me and my boyfriend have recently been quite sexually active, no intercourse though but other stuff. I stayed with him for about 5 days, but on the last two days he started fingering me (i've never even fingered myself) so it was a bit strange, but anyway... well today, this morning I was fine, but like two hours after I woke up I had gone to the loo and i had bright red blood on my underwear? I must admit, my v is slightly sore, and just basically my whole vaginal area is a bit sore.. after I cleaned that away though there hasn't been any bleeding.. sorry about the gross details.. just a bit concerned ;_;