I was having sexual with my boy friend

I was having sex with my boyfriend last Saturday when he asked me if we could try anal so being the adventurous type I am I said yes and we didn’t have any live so he went and got some Vaseline from the bathroom and he put it on me and he put it in and it hurt at first like a lot then it felt good but it kinda felt like I was taking a huge poop and after he finished he did it inside of me and I went to you know push it out and a lot of blood cane out with it do you think I should go to the doctor?