Confused. Lost. Need opinions. Nervous

April 7 i had sex. I believe it was near or on my fertile window.

we had sex he DID use a condom, we did not notice any rips or tears after.

He was in me for a minute And he pulled out 10 min before ejaculation and finished while i was giving him a handjob.

I took plan b to be safe. But not sure if it worked due to being in fertile window.

A few weeks later i had spotting for 4 days and then 3 heavy days (april 20) of bleeding followed by 3 of light bleeding and spotting (the first day of heavy bleeding started on CD 27 when my period was supposed to start the next day) And i took a test a month later and it was negative.

And i took one today 5 weeks and two days after sex and it looked negative. I have slight cramps but my next period is due Saturday! Is there any chance I could still be pregnant? Or am i just over reacting