So confused

Me and my boyfriend always have unprotected sex but I didn't get pregnant by him yet he said he doesn't want a kid for a year cuz he doesn't wanna rush having a baby but lately I been feeling sick and stuff like that and I am stressing cuz I think I am pregnant cuz of how I been feeling idk if I should take a pregnancy test now or wait to see if I start my period or not.. my sister in law's cousin Tiffany said I might be pregnant cuz on Facebook I post something like how I was feeling lately and she asked me these questions and I said yes to everything she might be right I might be pregnant I think I should wait and see if I start my period in 3 days before I take a pregnancy test cuz I don't wanna waste a pregnancy test if I'm not pregnant. But I am so scared that my boyfriend will leave me if I am pregnant even tho he said he won't cuz he loves me but he said I can be sick with the stomach virus I haven't even threw up yet but whatever I eat I get that throwing up feeling from it I haven't felt that way til last week idk what it is tho 😖 and I also been getting white discharge 🙁