What Are The Early Signs And Symptoms Of Pregnancy?

Okay so i have a question for you and i might be over reacting but its my first time i have had sex and i am on birth control i have had a few mishaps with taking the pill and we had used a condom but i just get this strange feeling that i might be pregnant i had my period i think the 19th thru the 22 and we had sex on the 26. I want and opinion please.