Ok so I started my period March 15 & I had unprotected sex with my boyfriend during my period on the 19th then on the 20th(the next day) I took a plan B pill because I was scared.... I finished my period on the 22, & the next day on the 23rd I had sex with my bf again, we used a condom only half of the time we had sex that day... the next morning I woke up to pee & I was bleeding as if on my period, it was heavy bleeding... Idk why? Could I be pregnant or something?