You cannot get pregnant because you have not had sex. However, you need to take your pills as directed especially after having unprotected sex so that your hormones do not change and do not work in preventing pregnancy. Consult a pharmacist for what to do in your situation.
It's very important that you take your pills as prescribed. Put them on the bathroom counter right beside your toothbrush. Take your pill every morning before you brush your teeth. It's the best way I've found to remember to take them.
Of course you can't get pregnant without sex, but you can get pregnant if you have sex and you forget your pills two days in a row. If you are going to engage in adult behavior, you need to take adult responsibility to prevent pregnancy.