Helping baby

I think I spoke way too soon to say Tyler sleeps so well.... Last night was the hardest night I've had since coming home from the hospital. We got zero sleep. Tyler literally woke up every ten to fifteen minutes crying. By 8am I was so tired, so frustrated & angry (not at the babies)... I called the pediatrician and said I'm done trying this or that. Nothing's working and it's only getting worse, I want him on the medication. This afternoon we picked up some Zantac & got him started on that. I wasn't sure if I could see any difference today until I could tell it wore off and it was time for his next dose. It's not a huge difference but it's a start. They said it could take 2 weeks for any noticeable changes.