hold a had, breath, and push!! just taje deep breaths, hold on tighter and push again... push even if you feel you cant!! and if u feel u gotta poop, dont worry, just let it out and push!!!
Labor for everyone is different, are you doing natural birth? If so then you just let everything proceed naturally, if hospital most likely they will give you drugs to help ease the pain. My labor with my daughter lasted 15 mins I also had my midwife who helped with pressure points to ease my pain. Try not to be nervous, you are almost there, cant explain what the pain feels like but the joy of holding your baby outweighs it all. Congrats on being a first time mom. Best wishes.