Am I pregnant?

22, no birth control , withdrawal method. Af due jan 19. Last af was here dec19-24. I'm 13 days late today. Always been regular. Had sex Jan 8,9 ; had spotting for a few hours on jan 15. Had some brown spotting for two days this past week. No tender breast just fatigue, random hiccups, headache , and nausea. Also random pelvic pain. Sharp. Negative blood test on the 4th day and got a negative urine test today. I've never been pregnant so idk how it feels but I know my body feels weird. It could all be in my head. I'm just tired of waiting . By the way no I'm not stressed out. This has never happened I'm worried 😩