single and pregnant

me and my ex had been trying for two years for a baby and we finally got engaged after being together for 5 1/2 years and then we found it that we were expecting. everything was perfect or so i thought and then it all started to slowly crumble. now here i am, a single mother to be and we barely talk, we're almost like strangers. someone help me as to how i can get over feeling so down about my situation. i don't see us getting back together either.