Since you just had her, you should speak with the hospitals lactation consultant asap.

The best advice is to go with the flow, keep offering her the breast, and trust your body to give her what she needs. Don't over think it. Kellymom.com and YouTube have great information to help you get started. Also, try to find a la Leche league group in your area.

Mine get engorged so she can't really latch because it's too much. Try hand expressions to make it easier for her.

Have you spoken to a lactation consultant? I hope things get better ):