If you have pregnancy symptoms you need to go to the doctor and get tested for sure, you can use this pregnancy calculator to see when you might be due http://pregnancyrx.com/pregnancy_calculator.php

This does not mean your pregnant the only why to really know is to take a pregnancy test that you get from the drug store or go to your doctor and they will check for HCG in your urine or blood. Check out this site for signs and symptoms of pregnancy.