Chemical pregnancy????😭

So I’m around 2-3 weeks (ik not very far) but I’ve been experiencing a lot of pregnancy like symptoms and have been crazy nauseous the past week or so and I can’t eat any. But after me and my husband had sex I started cramping and bleeding and it lasted for a few days but there was no clotting at all. But the blood was dark red... I’m really worried it’s a chemical pregnancy but I also read online that if it’s your first child and close to your period, implantation bleeding can be a lot heavier than normal. But I just don’t know and i can’t see a doctor anytime soon,. Someone please share your thoughts..