From what I understand, colic isn't well understood. Drs aren't sure what really causes it...or really what it is (stomach pain, gas, etc). Other than the babies cry for more than 3 hrs per day more than 3 days a week for no explainable reason.
Unless you notice a pattern of fussiness after you eat certain foods there, their blood in the stool, or a clearly allergic reaction of some sort (bad rash)....it probably doesn't have anything to do with what you are eating.
Just take a deep breath and know that colic just sometimes happens. There is NOT something wrong with your milk, so please don't stop BFing b/c of this. Jenna had colic (maybe or just was really fussy) and my mom used to tell me my milk was bad and to just give her formula

So glad I didn't listen.
It is just a matter of finding what works for your baby. No baby is the same and what worked wonders for some moms won't make a darn of a difference with your baby. You might not find anything that really 'works.' Know that is ok and it doesn't mean your a failure for not comforting your baby.
What worked best with Jenna was motion...and not the kind in a rocking chair. I would hold her and walk around the house while swaying her side to side for HOURS. She hated the car, stroller, and anything that involved you sitting...except nursing, she loved to nurse. It was really exhausting. But know that it DOES pass! It will peak at around 6 weeks and by 12-16 it should pass.
It may be worth a trip to the Dr to rule out ear infections, reflux, food allergies. But don't be surprised if your Dr tells you your baby is perfectly healthy.
Get whatever help you can. Dealing with colic alone is the worst! When DH gets home from work, leave and run some errands. I know I felt bad having others watch her b/c I know how hard it was to listen to a baby cry like that...especially when it isn't your baby. But don't feel bad People love you and want to help. Hopefully you have good family and friends in the area. If not, hire someone for a couple hrs here and there. You won't regret it!
On a positive note...I've been told babies with colic have higher IQs as adults

(I was told this by another colic mother of course, haha)