need opinions

So back in april me & my boyfriend were having sex & he came in me. I had been on the pill for a few days so it hadn’t been effective yet. When he came in me it was the day i had stopped ovulating. Later that day i took a plan B pill that is old ive had it for a little bit however it said it doesnt expire until september 2019. Ive been throwing up/ gagging at smells like perfume/clone , & cigarettes, & my breast are tender. Is it possible i could’ve gotten pregnant?