Inclusion Criteria:  Age > 18 years Term pregnancy (> 37 weeks gestational age) Elective caesarean delivery BMI >40 (Study Group) or BMI <30 (Control Group) ASA<=3  Exclusion Criteria:  Chronic pain History of opioid use during pregnancy. History of substance abuse disorder during pregnancy. Contraindication to neuraxial opioids, acetaminophen and/or NSAIDs Language barrier Allergy to Opioids or NSAIDS Intra-operative conversion to general anesthesia Maternal Admission to ICU. Neonatal admission to NICU.