Curious

So I’m just curious what you guys think because my friends and my bf keep saying I’m pregnant but I say I’m not. I think I’m getting sick or something cuz I’ve been feeling nauseous, my boobs hurt, heartburn, lower back pains, peeing more, and I’m tired more than I normally am I was bleeding a tiny bit on Sunday than it stopped. I honestly think I’m sick but they say I’m not sick that I’m pregnant but I don’t want to buy a test since I’m probably not since he doesn’t cum in me but lately when he cums it’s been getting on my vagina so idk any idea?