Hello... I noted your history.
It is not too early for test...in case of weakly positive case we do BHcg to confirm....but in your case BHCG is too low value....
2 Nd investigation to confirm pregnancy is ultrasonography...by 5 wks from Lmp Gestational sac is seen.n by 6 wks fetal pole with cardiac activity is seen .
3.rd in case of live intrauterine pregnancy BHCh value doubles in 48 hr.
Now why your period is delayed...it could be hormonal change, delayed ovulation. Or very early pregnancy which led to very missed abortion n your upt weakly positive
Next Steps
repeat BHcg after 48 hrs
USG
Health Tips
relax
start Folic acid 0.5 mg 1 month prior to conception