Story time! April 7

I had sex! Surprise surprise! However it was only for about a minute! (Because I panicked) the whole time (start to finish!) he had a condom on. He pulled out because i told him to stop and he finished in the condom about 6 minutes later from me giving him a hand job. However of course me a worrier. I took plan b. About a week and 2 days later i had blood only when i put toilet paper up in my vagina. That spotting lasted for about 5 days. Then on april 20 (13 days after sex) I had heavy bleeding when my period was supposed to start around the 21 of April. The heavy bleeding lasted for 3 days followed by 3 light days. Now today I wanted to make sure it was my period and I took a test yesterday and today. Yesterdays was negative and some people said they saw a faint line todays but majority said negative. Could i even be pregnant or should I stop worrying?