I need help idk if I'm pregnant or not

Porsha • I'm 18 lol 🐧🐧🐧
Me and my boyfriend of almost 2 years we are trying to have a baby we both want one me we are both 18 and I know everyone is gonna tell me not to have one but we both want one. But we had unprecedented sex on the 16 of this month and it hurts when I lay on my belly and sometimes when I'm trying to sleep it feels like Ima throw up and I've been very emotional. Before I get my period I cramp for about a week and then I get it. I have not started cramping and I should get my period on the 3rd. And I don't wanna get a test yet. So I need y'all help.