Can pregnancy chances be lowered if i urinate after sex or are sperm already on their way?

No: Urine does not enter the vagina so urination will not wash away any sperm. The benefit of urination after intercourse is the help prevent urinary tract infections.

No, won't work.: Unprotected vaginal intercourse leads to conception in up to 30% of cases, depending on maternal age. Urinating after sex will do nothing to alter that chance. Take Folic Acid 1-5 mg daily and good luck!