I had sex with a girl and used a condom, i pulled out, masturbarted and ejaculated in the condom. can she get pregnant??

Likely not: Condoms are not fool-proof, but darn close. Congratulations on using one! If there was a tear in the condom, pre-ejaculate can enter and cause pregnancy. If you didn't see a tear, then you are probably good. But the only 100% sure way to prevent pregnancy is abstinence. I would relax. Chances are good that all is well. Don't worry till you have to! You sound very responsible. You'll deal!

Less than 18% chance: 18% chance of pregnancy with a condom, probably less with the method you described. http://www.cdc.gov/reproductivehealth/UnintendedPregnancy/PDF/Contraceptive_methods_508.pdf