I.,
Congratulations! When are you due?
It all depends on your latch with your baby and how well that goes. It generally doesn't, unless several factors are pulled into play (bad latch - get your nurse to show you how to have the baby open their mouth very wide for nursing! and other possible factors that may not happen).
Don't be afraid to pump, it will only increase your milk supply for your baby!
Avoid BPA, PVC and other 'bad' plastics. medela generally has plastics free of these things, and others too. Glass is great, but doesn't freeze all that well (plus a zillion glass bottles in the freezer, nto that convenient! : )
get the lanolin ointment unless you are allergic. Safe for baby too.
If it hurts - keep on going! It hurt (on start up) for me, for about 2.5 months. Then we discovered his latch was just not there yet and we did some corrective stuff (hard to explain). and voila! he nursed just fine and I was fine too.
Don't be afraid of an pain you might have - the benefit for your baby is SO GOOD! Don't let anyone talk you out of trying either - There is such a great bond and when your baby starts teething (and mine did at 3 MONTHS!) you will be very grateful. There were days when NOTHING would soothe him except milk. He's still teething now (last molars) and while he likes the sugary stuff, it wears off. Nurse him and he's good to go in 5 minutes or less, and he's happier and sugar free (no peeling off walls necessarY).
Good luck, any questions, just email!
M.