My 5 month old has been waking up every few hours a night with bad gas for the last week or so. She's EBF, nothing has changed in my diet, so I'm not sure what's up. She has been teething- one tooth broke through earlier in the week. I've been giving her Tyelenol for the pain so I'm wondering if that could be causing it- or maybe swallowing excess saliva? Any ideas?