why am I bleeding while being fingered please help

I need help!! On Sunday me and my boyfriend had sex it was great after about an hour to 40 mins we went for round 2 as he was fingering me we noticed a lot of blood my hymen already broke I presumed it was my period seeing as I was due 3 days later and I'm starting to take the pill so I took it yesterday and haven't bled since please help me I dunno if I have stopped my period or if the blood was from something else if someone can help and explain that would be great