Is it common for new borns head to get swollen up and could that cause future problem with the baby and what cause the head to swell up ?

Coneheads or molding: is a common consequence of delivery producing a lopsided or flattened skull and will even out over the first few weeks of life. A cephalohematoma is a bruise that forms during delivery and appears to be a puddle of fluid under the scalp but above the skull. This will resolve on its own as well but sometimes leads to some jaundice. You should bring this up at the baby's 7 day exam for evaluation.