late period

Kamilia

Okay guys... My period was supposed to come on Saturday (4 days ago) and I still didn't get it and I'm getting very worried. I know that, since I stopped using the contraceptive pill last month it might just be my hormones readjusting... or something like that. I took a pregnancy test and it came out negative (yesterday) but I still can't stop myself from thinking that I'm pregnant. Could I really be pregnant?