Why not pump WHILE he nurses? It will keep your milk supply well established and it won't feel like all you are doing is pumping and nursing.
Formula is no where near as good as breastmilk and once you let your milk dry up, you can't get it back. It is also easy to take to the beach (ha ha - just you an baby, no coolers)! And the packaging is very nice in a bikini!
Stick with what YOU make. Recently breastfeeding has finally been in the media big time in the USA. The most recent studies shows that formula breastfeeding could save roughly 900 babies a year (which means the 900 babies die needlessly due to that fancy company that sent you 90 formula samples, diaper bags, etc). Other countries have always known this, but America gets sucked into the fancy marketing. http://www.cbsnews.com/stories/2010/04/05/health/main###-...
On the flip side, formula has been getting slapped with fines for toxic chemicals like rocket fuel and BPA leaching into the formula. I love how the formula companies try to defend themselves by saying they add in other chemicals to OFFSET the danger of the toxic ones. Well, THAT's HELPFUL . . .
All women should know - they are truly WONDER WOMEN! We make the best food in the known universe and no company, anywhere should make you doubt your superpower. In many countries it is illegal to even allow formula marketing to any pregnant woman. Hopefully our country will smarten up and save nearly a thousand babies a year from needless deaths.
Find other, long term breastfeeding moms - they will be your advocate, your best pal and the one who understands you completely.
I am part of the Cape Cod Breastfeeding Moms group on Facebook and we have an amazing group of moms who represent every walk of life and have overcome many obstacles. Find your Superpower and don't let anyone take it from you. Tell them, "Boobs are Best, so Buzz Off!"
EDIT: Someone said that the chemicals we eat end up in our breastmilk. People shouldn't make such incorrect assumptions like that. The breast is amazingly complex and filters most of what we eat. You could drink bleach (though not recommended!!!) and it wouldn't show up in breastmilk in any dangerous level. Someone should read medical journals on occasion and educate themselves . . . myths such as "The food we eat that is also full of chemicals is what makes up breastmilk" is what perpetuates the pervasiveness of formula feeding in America. It is very unfortunate that such myths persist, by women no less.