Sounds like you and you're little one are doing great - so glad to hear that.    It does sound like a growth spurt and either way you can't go wrong in satisfying his needs with lots of mom/baby time and healthy breastmilk.

My husband is a sound sleeper and if I put my toddler in between us I've woken to find Ben has scooted himself nearly underneath my husband or his pillow, which always worries me.  One solution I've found works for me is to put a pillow between my husband and my baby/toddler.  (we have a king so this works well)

But with a young infant, I would use a bed rail and keep baby on the other side of me, often sleeping in the crook of my arm.  I enjoyed having an arms reach cosleeper with my second, but with my first I often let her sleep in the bouncy seat beside our bed when she wasn't in the bed nursing (they say to be careful not to let baby's head flop forward and constrict his or her airways while sleeping in a car seat or bouncer).  I also like the suggestion of the twin bed mattress on the floor of baby's room for mom.  You don't have to worry about baby falling out of the bed with the mattress on the floor.  Definitely read up on safe cosleeping on those links - McKenna is great.

Thanks, you two!  We just spent the day nursing and napping on the couch. He has tons of wets and soiled diapers and great weight gain (close to a pound a week since birth). I was thinking it may be a growth spurt.  I don't mind breastfeeding him all day long as long as he's a happy baby!

Yes, it could be a growth spurt, letting him nurse as often as he wishes your supply will pick up.
How are the wet and poopy diapers? We always say to watch the output.
Trust your instincts, watch the baby not the clock. Hang in there.

The American Academy of Pediatrics recommends breastfeeding on demand.  So, just feed him when he is hungry and let him guide you to know when to switch.  If he is still acting hungry, you can nurse again.  Your breasts are never empty.  5 weeks is around the time most babies have growth spurts. 
Many women who nurse on just one breast do find a time in their nursing relationship that they have to switch sides.  It usually depends on how high of an oversupply you have and how quickly your milk supply regulates. 
LLL recommends following your baby's cues.  This takes all of the guesswork out of parenting. 

Hi,

My 5 week old has been insatiable lately! I normally feed him from just one breast -- have done this almost exclusively since my milk came in. Yesterday he fussed at the breast so much but I thought it was just his reflux (he's on medication, but his reflux has not interfered with his eating/weight gain as it's the silent type). Today when he fussed, I offered him the other breast which he hungrily took! Tonight he took both for around 25 minutes apiece and seemed like he could have eaten afterward (but began to fuss when the milk flow slowed on the second breast). Could this be a growth spurt? I don't think I have a production problem -- when I pump I am able to get 4-5oz per breast in just a few minutes... and Tyler is a big boy (12lbs) but not THAT big, right?!

If he continues to want both, do I just give him both? I want to ensure he is getting the fattier hind milk -- but after a while, he refuses to nurse from one breast and will fuss until I move him.

Thanks in advance!

i am not comfortable having my baby in my plush bed with my hundreds of pillows and heavy sleeping husband, so this was my solution:
http://www.amazon.com/Fisher-Price-Newborn-Rock-Play-Sleeper/dp/B002M77N22/ref=sr_1_1?ie=UTF8&s=baby-products&qid=1283906976&sr=8-1

i hate to recommend you buy yet another baby item, but we have this and we love it. it's a little bit lower than the bed but it's not as difficult as the pack'n'play and it's small.

i hope you are able to make it work for you! i know i definitely could not have my son in his room just yet. my 5 week old sleeps one 4-5 hour stretch in the night and then 2 3-hour stretches... but i'm not sure i could make it out of bed and to his room!

I would agree with the toddler bed rail (I found one at a thrift store for $5!). I also have a co-sleeper that straps to the bed (so there's no gap). Some can be pricey, but you might be able to find one that's used online for a good price.

This is the brand that I use:

http://www.armsreach.com/pages/about-us-pv-c10-1.html

The side of the bed can be put down so that you can slide the baby right over into the bed, or you can keep the side up but the mattress is so close to the top it's easy to transfer the baby without waking him or her or straining your back.

Glad it's working out for you so far!

If you go to this link, it's an article about how to estimate how much pumped milk your baby will need and also has a calculator you can use to figure it up. Hope it helps!

http://www.kellymom.com/bf/pumping/milkcalc.html

Congratulations!  I have that same concern.  I have put my bed up against the wall without any gaps and I put the baby between me and the wall.  My husband works a lot, too.
Another suggestion I have heard is to get one of the toddler bed rails and put it on your bed.
I have also heard some women move into the baby's room for part of the night.  They put a twin mattress on the floor and go nurse the baby on the bed when the baby wakes up.  The baby can be left there after they fall asleep and the mom can go back in her bed.
Good luck.  Hope you find something that works for you.