I had a fussy baby too- hang in there!!! She was much better after 6-7 weeks, if that is any reassurance!
Do you have an infant swing? My daughter liked the swing sometimes.
Try swaddling. I was never really good at it, but I thought their little arms needed to be free- now I know that that makes them feel like they are falling. Swaddle with arms inside. Babies R Us have velcro-type swaddling wraps that are easier than trying to fold and wrap a blankie.
Try massage. Google infant massage. My dd liked some pressure on her tummy. She also had to be burped pretty forcefully (I'm not saying beat your baby, but sometimes we're a little TOO gentle when it comes to burping!)
Slings are a great idea. They do take practice, but WOW- my baby would actually sleep in one!
Also, I co-slept. They make those little triangular shaped, terrycloth covered wedge things if you're worried about rolling over onto her. She had to be VERY close to me or else she would not sleep, but co-sleeping was just a miracle for us.
Try vacuuming or turning on a hairdryer, or a radio station that is set to static, and fairly loudly. This imitates the sounds she heard in the womb.
Hang in there with the breastfeeding too. I promise, the longer you do it, the easier it gets!!!
I joined La Leche League and LOVED it. I got such great advice- more for how to comfort and for my own sanity of getting out of the house and having a room full of women who were going through the exact same things!
Editing to add: Pumping to see how much you are producing is NOT an accurate measure. You do not produce as much milk by pumping as your baby can extract. This is outdated information given by doctors who aren't educated in lactation. It is *RARE* that a woman does not make enough food for her baby. You can easily count diapers to make sure she is not dehydrated. Also, not all breastfed babies poop every day, so as long as she is past the meconium stage, no need to worry if she isn't pooping a lot. Breastfed babies absorb MOST of the milk- it is that perfect!- so there is little waste to excrete! Most pediatricians will also weigh your baby for free as many times as you want to bring her in between well baby visits.
Congrats on your little one!
Amanda
-aspiring IBCLC