You can't feel what giving birth is like without giving birth! :-) Read Ina May's Guide to Childbirth by Ina May Gaskin-the midwife of all midwives in the US. This book will give you some idea what it's like. Anyone pregnant or even thinking about having a baby should read this. It's a masterpiece.
Probably not because the male doesn't have a birth canal in his body the eggs are released into a pouch which only male seahorses have and when the eggs hatch the babies come out of that pouch so I wouldn't imagine it as painful as other creatures giving birth.