Severe colic and acid reflux


4 week old baby girl has severe colic and acid reflux. On gerber soothe drops, gripe water and started on zantac... switched formula today to enfamil AR. Poor LO cries nonstop morning, noon and night. Only way she stops is if i rock her while she is upright on my chest. Sleeps maybe an hr in her swing... this FTM needs HELP... i feel terrible for her plus im 100% exhausted... any recommendations???