We broke up!!!

Ladies I need advice on getting over a breakup. We were together for 4 years with an almost 1 year old, we were also engaged. He sat silent not commucating with me for "months" supposedly believing I never loved or cared about him. I tried over and over for my heart and baby girl to win him back, but he keeps playing with my heart and saying he still doesn't love me. He already got a new girlfriend also. He never ask about his daughter or wants to see her/take her for a night. He started doing drugs and ignoring all my messages, he even ignored me when I told him out daughter had to go to the ER for an allergic reaction. (he never showed up) I spent everyday with this man and gave him my whole life. I have no job, no friends, and I was never really close to any of my family, only my dad. I'm so heartbroken and feel alone and this baby girl is the only thing keeping me going, but when she gets stressful I just feel so lost. I feel like my life is over even though I know it really isnt. I feel so broken, but I'm so angry with him now more then ever.