Colic, probiotics?

My daughter is a month old and for the last week I have been dealing with what I assume is colic. She's generally pretty content all day and then around 7pm every night she will become fussy and cry for no reason, nothing will make her happy for about 2-3 hours. She will sleep finally but not well and will remain fussy most of the night, only sleeping in 1-2 hour stretches. She also has some reflux and spits up quite often. Her pediatrician said since she is still gaining weight well and not screaming uncontrollably after every feeding he would rather not start her on reflux medication and I agree. My question is has anyone had any luck with probiotics helping with colic or reflux and if so which brand worked for you?