Last periods starting date on 16th march.had unprotected sex on 26th mar. felt pregnancy symtoms like nausea etc. beta hcg 1st april <1.20 is it accu?

Can repeat test: Today's home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A correctly done urine test will give a reliable result 3 weeks after sex (or when conception might have happened) or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon.