Cherish that baby with all your heart and don't let anyone or this world get you down. Everyone needs someone else to help one time or another in their lives there's no wrong in that as long as your not taking it for granted. Keep pushing and praying. Ask God to see you through and he will. Hold strong and you will conquer and be a better mother than your own and have a right to say it. Words from my favorite song" ooo child things are gonna get easier, ooo child things will get brighter!!" :-)
I was in the same situation. My aunt is the reason i dont live with my gram. My mom didn't give a rats a$$ when i miscarried and i havent spoken to her in months. If you need someone to vent to, i'm here. Check your local rainbow house, hud, or united way. They help single mothers a lot. That is unwanted stress for you and the baby. Good luck.