How accurate is a pregnancy test after 30 days of intercourse??

I lost my virginity August 8, I took the take action pill (generic form of plan b) 22-23hrs after the ordeal

My period came August 15th and lasted its full course of 5 days. I know this is a good indicator of not being pregnant but I struggle with anxiety.

I’ve done a pregnancy test after it hit two weeks and 3 weeks after sex. All negative

Yesterday it hit 30 days since having sex.

Am I good?