Had sex with my girl first week of January. Right after, I got her contraceptives but Postinor-2 wasn’t available so we had to settle for Postpill which was half the price. Her period that was supposed to come later that month, came the next day and left as normal. Two months later and she hasn’t seen her period since then. I’m not sure if it’s side effects of the postpill or there’s a chance she could be pregnant (we haven’t had sex since then)