help with contractions

If you can't time your contractions because it feels like one big long one that continues for over an hour but they hurt and you just want to curl up into a ball and they make you feel nauseous do you go to the hospital or what should I do? I'm 38+5 and these contractions hurt and make me want to curl up into a ball or throw up or all together uncomfortable. It feels like really heavy period cramping and I can't take all these contractions anymore or anything I'm in tears because every time I go to the obecc I get sent home. I really can't take it anymore.