I take birth control fairly regularly (occasionally I forget) and I had unprotected sex, but then I was worried that I could be pregnant and I read online that taking 10 birth control pills in two doses was the same as plan b. And then a few days after I stopped taking birth control (hoping to get my period) and it's been 3 days and I haven't gotten it yet. I've been getting cramps but it hasn't come yet. Could I be pregnant?