i know exactly how you feel, i think the longest mine took between poos was 2 1/2 weeks, which was very common for her. She would also cry alot and i could tell it was from wind. Although all the professionals would tell me that it was normal for breastfed babies, i just felt hopeless. In the end i would give her some coloxyl which would get her to go within a day or two and she would be happy again. She definately wasn't constipated but she obviously was just using everything i was feeding her but for some reason it still gave her pain. I also tried the brown sugar and water trick but it did nothing. She became a once or twice a dayer when she started solids at 5 1/2mths. Good luck i hope she goes soon