I don’t know what to do

Emma • Future Pediatric Nurse 👩🏿‍⚕️. Mother to a lovely 2 year old💙💙🇭🇹

I’ve been off birth control for 3 weeks now and I’ve had unprotected sex that whole three weeks. I been feeling terrible everyday and my expected period is 3 days late already. I took a test and it came out negative. Should I continue to wait? I have all the symptoms of early pregnancy.