I'm 16 years old and I lost my virginity last night ( 1.23.12 ) to my boyfriend.. We had unprotected sex ' is it possible that I might get pregnant even though It was my first time having sex?

Yes there is a chance. The best option is to go to a pharmacy and get a drug such as "plan B" (only available to people under 17 by prescription) take this asap. Either get a prescription or have a parent/trusted adult purchase it. Remember the sooner the pill is taken the better chance it has of working. Best of luck

Yes, there is always a chance, does not matter if first time or 10th time,

You also need to know that no birth control method is 100 percent effective. So even using protection, there is a chance you will get pregnant anytime you have sex.