Marcie (the previous poster) mentioned the best thing for you to do right now ... call your local LLL leader to have her help you get your baby to latch on. It does sound like your milk has come in and your breasts are engorged. It is imperitive that you get your baby to nurse or pump (if you weren't able to before, it could be your milk hadn't come in yet ... try again) to start telling your body it needs to continue producing milk, and to alleviate your soreness and avoid infections.
You are just getting your milk in ... it is just the beginning!
While you are waiting to talk to a LLL leader, see this link here for some great information to help you in the mean time:
My Newborn has never really gotten the hang of nursing. How can I get him back to the breast?
Some of the tips mentioned in this article to help your baby back to the breast include:
• Try nursing when your baby is asleep or very sleepy, such as during the night or, while napping.
• Vary nursing positions. (see illustrations.) Some babies will refuse to nurse in one position but will take the breast in another.
• Nurse when in motion.
• Nurse in a quiet, darkened room or a place that is free from distractions.
• Give your baby extra attention and skin-to-skin contact, which can be comforting for both of you.
• When offering the breast, undress to the waist and clothe your baby in just a diaper when ever possible. Use a shawl or blanket around you if the room is chilly.
• Use a baby sling or a carrier to keep the baby close between attempts to nurse.
• Take warm baths together to soothe.
• Sleep together in order to provide closeness and more opportunities to nurse.
See this link for information on engorgement:
My breasts feel extremely full and uncomfortable. What is happening and what can I do about it?
I think the absolute best idea for you is contacting a La Leche League leader or lactation consultant (IBCLC) for one-on-one support. They can guide you much better than anyone can over the computer.
Is there a La Leche League Group in your area? The leaders will help you for free. Here is the link to find one:
How to Find a La Leche League Leader Near You
Or you can find a list of International Board Certified Lactation Consultant's here.
Please post back and let us know how things are going for you ... you'll find some wonderful support from other nursing mamas here. But it is important that you speak with a leader in person in order to solve your baby's latching problem and get you guys nursing again!