You ask if it's possible for you to be pregnant - and the answer is yes - it's important to keep in mind that ANYTIME you have sex, whether it's "protected" or not, you RISK pregnancy.
Now, there are many 'unique' factors involved, and they are up to the individual. So, no one here could honestly tell you if your pregnant or not.
You will have to wait to see if you miss your period & then at a test. There are pregnancy centers that give FREE and CONFIDENTIAL tests - look one up near you at this site: