making the decision to be sexually active will invite regular check up with a gyno. and be looking inside you. Hope the guy is worth the doc. check ups :P
He would of tore your hymen which is why you would of had some bleeding since you said it was your first time. To alot of girls it might look like alot of blood but its not really. Did you or your bf take a look down there to see if the blood come from the hymen?. You should try speaking to your mum, she wont judge you. It may be embaressing it still is for me. When my mum found out i was first having sex she just advised me to be safe. If in doubt about anything speak with a doctor or visit family planning for any advise on sex/ controception ect
if this was your first time having sex then odd are he just popped your cherry ( ie broke your hymen ) which is normal and alot of girls bleed from it so it's nothing to worry about. now if you soak through a pad in one hour then you need to call your doctor right away because something else could be wrong... I only spotted after the first time I had sex but even that lasted a couple of days