Do Lubricants Affect Pregnancy Chances? Many couples wonder if lubricants can prevent conception. Oil based lubricants (like Vaseline, coconut oil, creams, lotions) can slow down sperm movement and reduce pregnancy chances. Oil based lube can cause some condom materials to break. Instead, use water based or silicone lube with condoms. Remember: Condoms do more than just help prevent pregnancy. Using condoms with new partners Actively Trying Fertility Lubricant Coconu Oil Based Sexual Lubricant Coconut Oil Sex Lube Can We Use Coconut Oil as Lubricant: Pros & Cons MyloFamily Can We Use Coconut Oil as Lubricant: Pros & Cons MyloFamily