I have a 28day cycle my period was july 9, 2013 - july 15, 2013 if I have sex on the 16, 20, 22, 25 of july after my period can I be pregnant.

Take the test. If you want to know if you are pregnant, take a test. In today's world you do not need to wonder if you are pregnant or not based on symptoms. Pregnancy tests are available at any pharmacy and in minutes you will have your answer. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period.