I like the idea of meeting with a lactation consultant or perhaps calling a LLL leader. This link: http://www.llli.org/Web/Illinois.html will help you find a leader in your area. It really is hard for any other moms to "diagnose" the issues with your baby. My son was colicky for about 4 months (he's now 3 yo) due to a sensitivity in the dairy in my diet. It took 10-14 days of no dairy in my diet to see him get through a feeding without pain. He outgrew this by 4 months and I was able to eat dairy once again. Curiously he had no problem eating at night so I did a lot of night nursing.
My son also had bouts of inconsolable crying not associated with nursing. He just had a fussy temperment. Every day it was a challenge finding ways to keep him calm. Something that worked one day sometimes didn't work the next day so I had to constantly change up what I was doing. So here's my list of things you might use to try calming an inconsolable baby:
1. WHITE NOISE. The swish-swish of the dishwasher calmed my son. Radio static, washing machine, bath water going, vacuum, etc. Conair sells a sound machine with a white noise option for about $20. Even the hum of the fridge worked at times. There are also CDs of white noise you can find online. Do a search and see what you can find.
2. VERY GENTLE VIBRATION. Putting my son on his back on the dryer or washing machine helped. I'd keep his head off so he couldn't be jiggled too much. Walgreens sells a vibrating pad that's supposed to fit on a chair. My mother-in-law got us one and we put my son on his back on the pad on the lowest setting. Again, we kept his head away from the vibration.
3. BATH. Just jump right in the tub with your baby and snuggle. Warm water on the belly worked nicely. You could try nursing in there to see if that helps. (Bit of a warning though..I was pooped on several times, but hey, my son wasn't crying anymore!)
4. "HAPPIEST BABY ON THE BLOCK." Good book with info about swaddling and shushing. There are videos on YouTube demonstrating the swaddling technique and more. A pacifer also might help.
5. PROBIOTICS. There's an online colic support group at colicsupport.com. Some folks at this group swear by probiotics that you can find health food stores.
6. MOTION. I used a fleece pouch from kangarookorner.com. I'd bounce in front of the dishwasher or walk outside. There are lots of babywearing options out there. Try a swing, car rides, stroller rides, etc.
7. GRIPE WATER and MYLICON DROPS. We used this product: http://www.coliccalm.com/. Worked for a few days then it just seemed to stop working. You can also find gripe water at health food stores. Mylicon didn't really work for us, but other moms say it's great.
8. CHANGE OF SCENERY. Sometimes just getting out of the house with your baby can help. A few times I just walked in the stairwell of our apt. building and that seemed to distract him from crying.
If you do need someone to talk to feel free to private message me. My son's colic was the most difficult time in my life. If there's any good to come from those very bleak months it's that I can pass on any information that might help another parent. Good luck to you and congrats on your new little girl.