vagina probs

Ok so me and this boy were about to have sex. At first he tried to finger me and it was really hard for him to get it in but he finally did. So when he tried to put his penis in it wouldn't go in at all he tried for like 5 minutes it felt like he was hitting a wall inside of me. So then he just gave up. When I got home I was bleeding and I bled for like 3 days and it definitely wasn't my period. I've had sex before and it wasn't easy to go in but it did. I've never been able to wear a tampon. I know I probably should go to doctor but I don't wanna tell my parents obviously. Does anyone know what this means?? PLZ HELP