I was on the pill for 6 and a half

Patient: I was on the pill for 6 and a half years. I got off the pill on March 7th. I had unprotected sex for 10 seconds before realizing I wasn’t on the pill anymore on April 3rd. He did noy ejaculate inside of me. My period came on April 9th and it lasted a little longer than usual and was lighter than usual. I took a pregnancy test today 14 days after the unprotected sex and it was negative. there is no or very little chance that I am pregnant right?

Doctor: