If you get pregnant with pre-ejaculate fluid does your child have any defects less potent sperm?

No, don't worry. Sperm is sperm, and no different because it is mixed in with pre-ejaculate fluid. Pre-ejaculate fluid as it is produced by the body has no sperm within it. It is designed as a lubricant and that's all it is. However, sometimes semen which does contain sperm mixes in with the pre-ejaculate fluid especially when a man comes close to ejaculating. The baby will be fine...no worries!