Ditto what Ephie said. And be so happy that you can pump. I couldn't pump with any success. The toe curling pain you had nursing is what I had pumping, and no real milk came out. I hope you can do this, but if you can't and can only pump, at least your baby can drink your breastmilk.
Also, try to relax. My mom told me about her struggle with her first, and her doctor asked her about what things were like "at home". She was living with my dad's family, and they were very "loud" LOL! Grandma's sister thought that nursing was "nasty" and Grandma was a little jealous because she wanted to give the baby a bottle. So my mom was pretty stressed. (Nowadays, breastfeeding is MUCH more in vogue, keep in mind, so hopefully you don't have people giving you static for nursing.) Anyway, he told my mom to go in the bedroom, turn on some soft music on the radio, lay down with the baby and nurse. It worked. She could say to the family that the doctor said to and they stopped giving her a hard time. (That particular doctor was their recommendation and they liked him, so they didn't argue with him telling her to go in the bedroom.)
You know, you don't have to nurse in front of anyone if you don't want to, regardless of what anyone else does. Your baby is who is important, not your visitors. You can turn on the tv for them while you go nurse the baby.
Don't know if this helps, but try not to stress.
Dawn