I had sex with a virgin,but I didn't really penetrate I only went as far as break the hymen. But I didn't in her but after the sex I noticed some particles of sperm on my penis.. can she get pregnant?

Yes, any time there is penile penetration pregnancy is a possibility. If you put your penis in her, broke her hymen, then you did indeed penetrate her.

Yes, any penetration at all, if you broke the hymen you were certainly in.