It sounds like he needs to calm down and take things a little slower. You need to make sure you are properly lubricated (even if that means purchasing a bottle of lube to use during sex) and you need to tell him if he's hurting you. The red discharge is likely blood from torn vaginal tissues. Especailly when a man is large, he needs to be very aware of how far he can take things - if he's going in deep enough to hurt, put a pillow on your tummy and that will cut down on how deep he can go. Mostly, you need to stand up for yourself and tell him that you want sex to be pleasurable, not painful, and if he's not willing to do what you need to accomplish that, kick him to the curb. You should be enjoying it too!
Does he trim his nails? Do you let him know that what he is doing is not pleasing you..don't be afraid to...perhaps sit him down someplace other than the bed room and discuss it...guide his hand/fingers to those areas that feel good...you sound young and he may be as well and needs some guidance.
Jim
my boyfriend fingers me and made me very very very swollen bleeding almost i told him it hurt and he got way to into it and now the lips of my vagina are not the same i need some help and advice