What you express very rarely equates to what bub is drinking. Babies are MUCH more efficient at getting all the milk they need. Some women can't express a great deal of milk, but know that their babies are getting plenty.

I did love using the electric pumps when we were in hospital. Are you feeling a let down when you pump? Having a good letdown makes all the difference, the milk can almost pour into the bottle (well.. not really... but it flows really fast LOL). Have a look through the ABA site for tips for expressing.. that might help.

But yeah.. definitely don't stress about the amount you can pump (unless you're needing to express for a specific purpose?) as it's certainly not an indicator of your supply.

Also.. with the feeling full thing... this will start to drop off now you're reaching the 6 week mark, as your boobs will be settling into the supply/demand thing and will make just the right amount of milk as baby suckles... you won't have that full feeling as much. But I have heard that early morning is a good time to express.