If you are breastfeeding it might be something you are eating. With my oldest I had to cut my diet down to white rice and plain chicken 3 meals a day and add in food every three days. His colic and constipation stopped & he sure let me know when I cheated.
The, " cries before urinating" seems unusual. Where the docs aware of this or only of the Colic? I assume you are breast feeding?
Thank you for the support. I hav met 3 doctors and every said wait until he becomes three or four months old. Nothing can be done until then. By his fourth month things wil be alright.
Googling this, it seems surprisingly common. The question is common, the answers are few.
It seems like you should get your son checked for a bladder infection, but most answers say you just wait it out for the next few months.
I'd bring this up with your doctor - do you have a check up coming up?