Hi, can pre cum get a girl pregannt ? 4 days before her period ?

Not likely: Condoms should be worn prior to any intercourse, because there is active sperm in "pre-cum". However, it is not likely to cause pregnancy 4 d prior to a normal interval menstrual cycle - this is how natural family planning works. However, unless there is strong documentation of normal cycles, pregnancy can occur if this was not a normal episode of bleeding.

Yes: Any fluid from a stimulated penis contain enough sperm to impregnate a woman. Pregnancy has been recorded on any day of a woman's cycle, including menses.Although pregnancy in this setting is less likely than others, it can and does occur. Cycle timing and pull out are both forms of pregnancy roulette.