He says He Dont Want it.

I think im pregnant , and told the guy who would be the father . His response was , Dont have it get an abortion.. He said he wouldnt be the father , and couldnt be there. Im only 15. Ive cried , and been so worried and upset , and now this makes everything worse. I asked him if he even wanted to know if i am or not after i got checked. He said yes , and then said he'd pop back up after he finished highschool. How could he think thats right?  I feel miserable like im going to die , ive been sick , and scared that ill end up like my mother. She had me at 15 , and Left me , and when i look at her now im scared that willl be me , an Alcholic Pill head , and "Junky" , who has nothing to do with their kids. She haas never been there she left when i  was 2.  And traded me for a car. Im scared ill end up just like her.  And what will i tell a child if i am pregnant , what will i tell them as the reason for their father not being there?  I know how it feels not knowing a parent or feeling unwanted , and it makes me feel even worse that i had sex and could possibly be pregnant by a guy like him "my baby daddy" . I feel all alone and scared , my father always works i barely see him , and im scared to tell him i mite be pregnant. i disappoint my father Alot , ive been arrested several time , been kicked out of school , for fighting , and  other stupid things.  And knowing that i disappoint him hurts me , and i know that if im pregnant it would hurt him even more ....Should i just have an abortion? But i honestly dont think i could live with myself knowing i killed something that was a part of me , a person ... Im alone ..And dont know what to do. I looked to sex as a way of releasing my mind and forgetting about my problems ,and now it seems to have got me in the biggest problem. What should i do?