Am I being Paranoid?


I started having sex about 4 weeks ago and I’m being paranoid. I have the birth control implant and we used condoms. But I’m 3 days late and feel nauseous and a headache and my stomach is cramping. But no blood. I don’t know if I should even test because it’s like a less than 1% chance that I could be pregnant. And if I am I am completely screwed. Idk I’m venting no one has to comment back but all my friends and mom would be mad that I’m sexually active so I’m venting here (im 19)