I have unprotected sex po this last july 20 withdrawal po. Nag woworry po ako if preggy ako kasi di parin ako dinadatnan hanggang ngayun (august 25)

I took pregnancy test on august18 (4 weeks from july 20) and the result is NEGATIVE . I believe i followed the instructions well

also to be sure i took pregnancy test ulit today august 25 (5 weeks from july 20 ) and the result is NEGATIVE. Morning urine din po gamit.

should i take another Prenancy test after 1 week para sure ? di parin po ako dinadatnan. pero wala din po akong feeling ng early pregnancy so far.
O ACCURATE na ba na Negative talaga na preggy ako ? Please advice po kung nagiging paranoid lang ako o hindi.salamat po