Baby Normal Straining Soft Stool

Straining looks dramatic because a young infant is learning to increase abdominal pressure while relaxing the pelvic floor. If the result is soft stool and the baby settles, feeds, urinates, and grows normally, the effort itself may not be constipation.
Summary
Observe rather than repeatedly stimulating the anus. Contact a clinician if stool is hard or pellet-like, effort is prolonged or repeatedly unsuccessful, pain persists, blood appears, feeding or urine falls, vomiting or abdominal swelling occurs, or the baby seems ill. A newborn's poor stooling can also signal inadequate intake.
Look at the stool, not only the effort
Young babies may grunt, cry, draw up their legs, and turn red because they are learning to coordinate abdominal pressure with pelvic-floor relaxation. If a soft stool follows and the baby settles, feeds well, has usual wet diapers, and grows, the effort itself may be normal. Constipation is more strongly suggested by hard, dry, pellet-like, unusually large, difficult, or painful stool.
Avoid rectal stimulation and unadvised remedies
Do not insert a thermometer, cotton swab, soap, suppository, or any object to trigger stool. Do not give an enema, laxative, herbal product, juice, or plain water without age-specific advice. Repeated stimulation can injure tissue and delays assessment of the real pattern. Gentle holding and slow bicycle-leg movement may be comforting only when the baby enjoys it and no pain, vomiting, distension, or other warning sign exists. Stop any maneuver that causes distress. A clinician should choose medicine and dose after considering age and possible impaction.

Call early when the pattern persists
Contact a clinician when hard painful stools persist, straining is repeatedly unsuccessful, appetite or feeding falls, wet diapers decrease, blood appears, the abdomen seems persistently firm, vomiting occurs, or the baby is not gaining as expected. Babies under 8 weeks who have not passed stool for 2 or 3 days should be discussed with a maternity or primary-care professional because feeding adequacy matters. Do not wait for a universal day count. Exact age, feeding method, stool texture, and whole-body condition determine the appropriate timing.
Recognize newborn and obstruction red flags
Tell a clinician urgently if constipation was present from birth or the first weeks, a full-term newborn did not pass meconium within 48 hours, stool is ribbon-like, or growth is faltering. A swollen abdomen with vomiting is a red flag rather than routine constipation. Green vomit, severe persistent pain, marked lethargy, difficulty waking, breathing trouble, blue or gray color, or seizures needs emergency help. Do not test the situation with food, fluids, medicine, suppositories, or an enema.