My baby won't poop!

jkillin

My baby is 2 weeks old today. His first week he was only formula fed and had all the "normal" poops. Day 8-12 we started adding in Breast Milk feedings, along with supplementing with formula. Days 13 & 14 have been straight Breast Milk. Around day 8 or 9 he was only pooping 1 time a day & it was runny. Now that last 2 days he has not pooped at all. He is very gassy though.

Ofocurse our pediatrician is closed today, we have an appt on Monday. 

Any suggestions to help him poop or is this normal? How do I help with gas? He seems uncomfortable when he strains to pass gas, but he eats and sleeps fine...