Feeling alone, first time mom

Hi ladies. Curious to ways I can help cope with being a mom now. I’m 28 and just had my first born. She’s only 1 week and 2 days old. Today has been ruff. I live alone so it’s just me and her mainly. I’m awaiting paternity results and not sure if that’s what is bothering me also. The guy who I believe is her father calls everyday but because he is a full time dad to 3 other children and works 12 hour shifts, doesn’t leave much time for him to come by. Maybe 1-2 times a week and can spend the night only during the weekend because of the school year starting back up. I’m a little annoyed with myself that my patience today is very short. I’m emotional and crying because she has been fussy all day. I just don’t know what to do