Hi, my 3 months and a half baby is having crying episodes for aparently no reason, she don't do it everyday, but few times in a week. She spit up frequently and today she vomited. When she cries she have like nausea and she start coughing and she sound like she is shocking. I need to put her straight an pat her back last night she did the same and that was scary , she was grasping for air in the car seat I hold her pat her back and after that she was fine. I start crying. Can be acid reflux? She is 3 months and 16 days, 15 lb 2 oz and 26 in.