Am I in labor???

I've been having these painful stomach cramps since 7 this morning. Its now 11:33 and I still have them and they've been feeling a lot worse. I get a little sharp pain in my back but the pain is mostly in my stomach. My stomach is also very very hard. I also feelnlightheaded, nauseous, and very hot. I'm a ftm so I don't know if this is real labor or not? Can anyone help me?