Why do i feel so bad? for no reason?

hi all i have never posted a person question like this before but i could do with some support. i am gonna bearmy soul here so please no sarcastic answers.I am 20 up until about 18 months ago i thought my life was fab i would go out fri , sat and sun get bolloxed and probly end up snogging some huy if not more. however there was one in particular who although we never were officially going out went back to each other’s almost every weekend , although I knew that this wasn’t gonna be a dream come true I was happy then I get pregnant by his brother, I think although it was possible it was him, every one in my local found out neither of the men gave me support, when I had to get ris of baby. Since then I have been out less and and not myself , I have always ben big but it never bothered me before now I just wanna hide away. I feel fat and ugly and always think what might have been. Over the last few days I feel like crying for no reason and feel like I need a boyfriends not a casual like