Feel like killing myself I can't take life anymore.

I Juss turn 21 my first kid n 5 months prego and my fiancé which is my baby father treating me like shit denying my unborn n been treating like shit this whole pregnancy tell everyone this isn't his kid and also wen it comes to food like he lets me starve with no food when I stay over his place my parents dnt give really show that they care that I have a grand child on da way my sisters n brother nothing no support from NOONE I feel like I'm alone in this world . I feel like I made the biggest mistake I'm so hurt I've been hurt too much idk y I ruin my life . I wanna go back into time n finished my college n continue living life now in here stuck depress stress trap lonely anything u can think of . I feel like dying Soo bad. Bt I always think of my unborn baby girl she always think me out of that she the only reason y I'm still here n keep going I've had no happiness Thid pregancy I've been stress since day 1 once I found out. Idk with all the stressful things going on idk how I can still do it .... In still here strong .  I need help I really do ima break dWn I hold too many things in ...... God why me.  I feel like I'm nt ready for a baby but it too late bew so I gotta do wat I gotta do . Can't believe my fiancé n he Anit ready neither that's y he's denying it out of all peoples smh