During my erection either urine or pre-cum came out (which would flush semen). I may have touched liquid and then put condom on. Can she be pregnant?

Be careful. There is a significant amount of sperm in what you are referring to as pre-cum. So the answer is that it's possible.
Possibly. Pre-ejaculate may contain large amounts of viable sperm (less common), smaller amounts of sperm that are dead or alive or no sperm. There is potential for pregnancy with pre-ejaculate. Sperm need to be deposited in vagina or at introitus for pregnancy to occur. Fresh sperm on exterior of condom may ^ risk for pregancy.
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