My baby 2mo & breast fed. Hasnt pooped 4 3 days, & has pain karo syrup ddidnt help or qtip. What can I try?

Other Sx ??? The breast fed baby can have a small smear of poo every feeding or a giant crib filler poo every 7-10 days & be normal. If all of babies stools have been soft to this point & baby is otherwise behaving normally, i wouldn't do much other than wait for the inevitable poo. I baby has dropped his/her feeding activity & changes play patterns, an exam may be indicated. Call the office & check with dr.
I'm concerned. I feel your baby is too small to get advice over the internet. After children are checked and there is no mechanical obstruction, i teach using mineral oil. I don't think this is the time for your baby. Get checked to be safe.