you would need to take a home pregnancy test; and then repeat it in a week or so. you can also get your medical provider to order a more-sensitive blood pregnancy test. if you do not want to have an unplanned pregnancy it would be wise to be more diligent in preventing one (oral contraceptives condoms etc. ).
i had unprotect sex in dec 20th 2013. my period come on jan 10th to 14th 2014. i want to know if i am pregnant?