Can my girl fall pregnant if her sperms didn't break but mine did?
I wasn't able to completely understand your question. But it does appear that you are bit confused as to how things work.
First, women do not have sperm. They release an egg once a month two weeks before their next blood flow. Since the time between blood flows can vary, it is difficult to predict accurately when the egg will be released.
Men do have sperm within their semen. A typical ejaculation of semen contains about a half billion sperm cells. If a man's sperm enters a woman's vagina, it can survive up to six days. If it meets up with the woman's egg, then fertilization occurs and the woman becomes pregnant. A man doesn't even have to ejaculate inside a woman for this to happen. All that is required is that some of his semen or even his pre-ejaculate to get into the vagina. How that happens doesn't matter to the sperm, which swim.
Therefore, any time a man has sex with a woman, whether it is intercourse, oral sex, or getting a hand job, there is a potential for the woman to end up pregnant. This is why God said that sex only belongs in a marriage. "Marriage is honorable among all, and the bed undefiled; but fornicators and adulterers God will judge" (Hebrews 13:4). Children deserve committed parents, not selfish people who are focused on their own pleasure.